Branchoria Strange Museums and Curiosities by Country Strange Museums by Country

Explore strange museums, unusual collections, and offbeat heritage across countries.

Within Nauru Curiosities

Is Command Ridge Nauru's Open Air War Museum?

Rusting guns, bunkers and defensive structures turn Command Ridge into an unstaffed military collection tied to occupation, forced labour and bombardment.

35 sources 3 graphics

On this page

  • Japanese occupation and island fortification
  • What survives at Command Ridge today
  • Access, safety and respectful interpretation
Preview for Is Command Ridge Nauru's Open Air War Museum?

Introduction

Command Ridge is the closest thing Nauru has to an open-air war museum. Rather than displaying military artefacts inside galleries, the island’s highest point preserves rusting anti-aircraft guns, concrete bunkers, command posts and defensive works where they were originally built during the Japanese occupation of the Second World War. For visitors interested in unusual military heritage, the site offers a rare chance to see an almost intact battlefield landscape rather than a reconstructed museum exhibit. At the same time, it is not a curated attraction. Interpretation is limited, many relics remain exposed to the tropical climate, and the site represents a painful history of occupation, forced labour and wartime suffering rather than military nostalgia.[Wikipedia]WikipediaCommand RidgeCommand Ridge

Command Ridge illustration 1

Is Command Ridge Nauru’s Open-Air War Museum?

Calling Command Ridge an “open-air war museum” is useful as a way of understanding the experience, but it should not be taken literally. There is no staffed museum building on the ridge, no formal exhibition route and only limited interpretation. Instead, the landscape itself functions as the collection.

Unlike many preserved military sites where guns have been relocated into parks or museums, many of Nauru’s surviving weapons and fortifications remain close to the positions where Japanese forces emplaced them during the occupation. Visitors walk through the remains of a defensive system rather than around isolated artefacts behind barriers.[Pacific Wrecks]pacificwrecks.comPacific WrecksPacific Wrecks - 127mm Anti-Aircraft Gun Type 89 (Nauru No. 1)April 19, 2021…Published: April 19, 2021

This makes Command Ridge unusual within the Pacific. Numerous islands retain wartime relics, but on Nauru the concentration of surviving structures within such a small area creates the impression of a dispersed military collection embedded in the landscape itself.

The $600 Dinosaur Tail That Proved Warm-Blooded Dinosaurs

Channel: Fossil Forensics

Open on YouTube

Japanese occupation and island fortification

Japanese forces occupied Nauru in August 1942 and rapidly transformed the island into a fortified outpost. The highest ground at Command Ridge became the centre of military observation and air defence because it overlooked much of the island and surrounding coastline.[Wikipedia]WikipediaJapanese occupation of NauruJapanese occupation of Nauru

The occupation was not simply a military engineering project. Construction relied heavily on imported Japanese and Korean workers together with forced labour imposed on Nauruans, Chinese residents and people deported from the Gilbert Islands. Defensive works, roads and the airfield were created alongside severe restrictions on the civilian population. The surviving bunkers therefore represent both military architecture and evidence of wartime coercion.[Wikipedia]WikipediaJapanese occupation of NauruJapanese occupation of Nauru

The Japanese built an interconnected defensive network that included:

  • Anti-aircraft gun positions overlooking likely aircraft approaches.
  • Coastal artillery supporting wider island defences.
  • Concrete command bunkers and communications positions.
  • Underground shelters and bomb-proof structures.
  • Machine-gun emplacements linked by trenches.
  • Searchlight positions for night-time air defence.[Pacific Wrecks]pacificwrecks.comPacific Wrecks Stan GajdaPacific WrecksStan Gajda - Nauru…

Rather than surviving as isolated ruins, many of these features can still be recognised as parts of a single defensive system.

Illicit Fossils: The Ethical Dilemma in Protecting the World's Natural History

Channel: Royal Tyrrell Museum of Palaeontology

Open on YouTube

What survives at Command Ridge today

The site’s most striking relics are the large naval anti-aircraft guns, especially surviving twin 127 mm Type 89 gun mountings that remain in situ. Australian occupation forces disabled many weapons after Japan’s surrender by removing breech mechanisms, but the mountings themselves survived and remain among the best-preserved examples of their type in the Pacific.[Pacific Wrecks]pacificwrecks.comPacific WrecksPacific Wrecks - 127mm Anti-Aircraft Gun Type 89 (Nauru No. 1)April 19, 2021…Published: April 19, 2021

Elsewhere around the ridge, visitors can still identify:

  • Concrete bunkers with firing openings.
  • Command and communications bunkers.[takeyourbackpack.com]takeyourbackpack.comvisit command ridge wwii relicsCommand Ridge WWII Relics Attraction Guide (Nauru, 2026)May 13, 2026 — NAURU🇳🇷 | ATTRACTIONSCOMMAND RIDGE WWII RELICS HILLTOP BUNKERS, RU…Published: May 13, 2026
  • Observation positions.
  • Machine-gun emplacements.
  • Searchlight battery remains.
  • Sections of trenches and defensive earthworks.
  • Fragments of barbed-wire defences and military infrastructure.[Pacific Wrecks]pacificwrecks.comPacific Wrecks Stan GajdaPacific WrecksStan Gajda - Nauru…

Many structures remain weathered rather than restored. Rust, vegetation and tropical corrosion are now part of the site’s appearance, reinforcing the sense that visitors are exploring a preserved battlefield rather than a reconstructed heritage attraction.

Some ammunition associated with these defences has been removed over the years and is displayed in the Naoero Museum. Examples documented by military historians include complete anti-aircraft and coastal artillery rounds recovered from the Command Ridge batteries, creating a direct link between the outdoor landscape and the museum’s indoor collection.[Pacific Wrecks]pacificwrecks.comPacific WrecksPacific Wrecks - Nauru Museum (Nauru Military Museum)…

Command Ridge illustration 2

Why the landscape matters more than the individual artefacts

The significance of Command Ridge lies less in the rarity of any single gun than in the survival of an entire military environment.

Across much of the Pacific, wartime equipment was dismantled, scrapped or relocated after 1945. Nauru’s isolation, small population and limited redevelopment allowed substantial portions of its Japanese defensive system to remain where they were abandoned. This preserves relationships between bunkers, artillery positions, observation points and terrain that are often lost when artefacts are collected individually.[Pacific Wrecks]pacificwrecks.comPacific Wrecks Stan GajdaPacific WrecksStan Gajda - Nauru…

For historians, this helps explain how Japanese planners adapted a tiny phosphate island into a fortified military base. For visitors, it creates a more immersive experience than viewing cleaned and labelled weapons inside display cases.

The site also illustrates how industrial and military histories overlap on Nauru. Wartime defences sit within a landscape already transformed by phosphate mining, making the island’s twentieth-century history visible through layers of extraction, occupation and abandonment.

Fossils in amber offer an exquisite view on dinosaur times—and an ethical minefield

Channel: Science Magazine

Open on YouTube

Access, safety and respectful interpretation

Command Ridge is accessible by road and track and is regularly visited by travellers exploring the island. However, it should be approached as a historic site rather than an adventure playground.

Visitors should expect uneven ground, deteriorating concrete, rusted metal and tropical vegetation. Entering confined bunkers or climbing onto artillery pieces carries obvious risks, particularly where structures have experienced decades of weathering. Although large quantities of ammunition were removed after the war, unexploded ordnance has occasionally been discovered elsewhere on Nauru during construction and excavation, reminding visitors that wartime remains should never be disturbed.[Pacific Wrecks]pacificwrecks.comPacific WrecksPacific Wrecks - Nauru Island, Republic of Nauru (Nauru, Nauru Island)…

Respect is equally important. The surviving fortifications commemorate a period that included forced labour, civilian hardship, deportations and aerial bombardment. The attraction lies not in military spectacle but in the remarkable survival of authentic historical remains that continue to shape Nauru’s understanding of its past.

Within Nauru’s wider landscape of unusual heritage, Command Ridge stands apart because it functions simultaneously as an archaeological site, an outdoor military collection and a memorial embedded in the island’s highest ground. Few places demonstrate so clearly how an entire wartime defensive system can survive in the open, allowing history to be read directly from the landscape rather than solely from museum displays.

Command Ridge illustration 3

Amazon book picks

Further Reading

Books and field guides related to Is Command Ridge Nauru's Open Air War Museum?. Use these as the next step if you want deeper reading beyond the article.

Browse more on Amazon:The Pacific War, 1941–1945Pacific Crucible: War at Sea in the Pacific, 1941–1942The Conquering Tide: War in the Pacific Islands, 1942–1944

As an Amazon Associate I earn from qualifying purchases.

eBay marketplace picks

Marketplace Samples

Live-tested eBay searches with available results related to this page.

UsingUSA

Selected fromWorld War II Pacific poster oneBay.co.uk.

Browse more oneBay.co.uk

Example items shown for inspiration; availability and pricing can change. Branchoria may earn a commission if you purchase through outbound eBay links.

Endnotes

1. Source: Wikipedia
Title: Command Ridge
Link:https://en.wikipedia.org/wiki/Command_Ridge

2. Source: Wikipedia
Title: Japanese occupation of Nauru
Link:https://en.wikipedia.org/wiki/Japanese_occupation_of_Nauru

3. Source: pacificwrecks.com
Title: Pacific Wrecks Stan Gajda
Link:https://pacificwrecks.com/people/visitors/gajda/nauru.html

Source snippet

Pacific WrecksStan Gajda - Nauru...

4. Source: pacificwrecks.com
Link:https://pacificwrecks.com/gun/127mm-type89/nauru.html

Source snippet

Pacific WrecksPacific Wrecks - 127mm Anti-Aircraft Gun Type 89 (Nauru No. 1)April 19, 2021...

Published: April 19, 2021

5. Source: pacificwrecks.com
Link:https://pacificwrecks.com/restore/nauru/index.html

Source snippet

Pacific WrecksPacific Wrecks - Nauru Museum (Nauru Military Museum)...

6. Source: pacificwrecks.com
Link:https://pacificwrecks.com/location/nauru_island.html

Source snippet

Pacific WrecksPacific Wrecks - Nauru Island, Republic of Nauru (Nauru, Nauru Island)...

7. Source: pacificwrecks.com
Title: Just before bombs away, this B-25 sustained a dire
Link:https://pacificwrecks.com/aircraft/b-25/42-64977.html

Source snippet

Pacific Wrecks - B-25G-5 "Coral Princess" Serial Number 42-64977January 10, 2026 — At the start of the bomb run, the formation was target...

Published: January 10, 2026

8. Source: pacificwrecks.com
Title: Pacific Wrecks
Link:https://pacificwrecks.com/gun/140mm-type3/sup/no2.html

9. Source: pacificwrecks.com
Title: Pacific Wrecks
Link:https://pacificwrecks.com/restore/nauru/miningtools.html

10. Source: pacificwrecks.com
Title: Pacific Wrecks
Link:https://pacificwrecks.com/restore/nauru/secureweapons.html

11. Source: lonelyplanet.com
Title: Command Ridge | Attractions
Link:https://www.lonelyplanet.com/points-of-interest/command-ridge/1045487

12. Source: traveldojo.com
Link:https://www.traveldojo.com/command-ridge/

Additional References

13. Source: takeyourbackpack.com
Title: visit command ridge wwii relics
Link:https://www.takeyourbackpack.com/backpacking-in-nauru/visit-command-ridge-wwii-relics/

Source snippet

Command Ridge WWII Relics Attraction Guide (Nauru, 2026)May 13, 2026 — NAURU🇳🇷 | ATTRACTIONSCOMMAND RIDGE WWII RELICS HILLTOP BUNKERS, RU...

Published: May 13, 2026

14. Source: youtube.com
Link:https://www.youtube.com/watch?v=WbgmsStBkzY

Source snippet

The $600 Dinosaur Tail That Proved Warm-Blooded Dinosaurs...

15. Source: nps.gov
Title: Agat Unit
Link:https://www.nps.gov/wapa/planyourvisit/gaan-point.htm

Source snippet

National Park Service)May 16, 2025 — WORLD WAR II REMAINS FOR YOUR SAFETY! Do not climb on, enter, or walk under any of the historical st...

Published: May 16, 2025

16. Source: youtube.com
Title: Illicit Fossils: The Ethical Dilemma in Protecting the World’s Natural History
Link:https://www.youtube.com/watch?v=PnssaLktiXw

Source snippet

A tale of two papers: ethics of Burmese amber...

17. Source: everything.explained.today
Link:https://everything.explained.today/Japanese_occupation_of_Nauru/

18. Source: youtube.com
Title: Episode 135: Burmese Amber Pt2
Link:https://www.youtube.com/watch?v=ABC736Ron80

Source snippet

Illicit Fossils: The Ethical Dilemma in Protecting the World's Natural History...

19. Source: military-history.fandom.com
Title: Military Wiki Japanese occupation of Nauru | Military Wiki | Fandom
Link:https://military-history.fandom.com/wiki/Japanese_occupation_of_Nauru

20. Source: crooked-compass.com
Title: Nauru’s War History: WWII Wrecks & Relics | Crooked Compass
Link:https://www.crooked-compass.com/travel-blog/naurus-history-wwii-wrecks-relics/

21. Source: youtube.com
Title: The $600 Dinosaur Tail That Proved Warm-Blooded Dinosaurs
Link:https://www.youtube.com/watch?v=Dr1mnTX3DP8

Source snippet

Episode 135: Burmese Amber Pt2...

22. Source: youtube.com
Title: A tale of two papers: ethics of Burmese amber
Link:https://www.youtube.com/watch?v=0LxHpvgflBw

Source snippet

You stopped this response...