Forts

This remote location of this Moorish stronghold means it doesn’t attract many tourists—and that it still has the aura of fear and bravery of the 1300s.

This ruined fort and statue are a testament to the last king of Kaua‘i’s savvy diplomacy skills, which briefly brought Russians to Hawai‘i.

The remains of a former colonial fort on a stretch of beach that is occasionally visited by crocodiles.

This old army installation has worn many hats throughout its history.

This fort dates back to 1588 and was colonized by the Portuguese, Dutch, and English and sits prominently on the Indian Ocean where azure water lap the coast.

Accessible only by boat, this centuries-old island fort never saw troops or combat.

This remote island, home to the easternmost point in Denmark, once hosted pirates and a military fortress.

These mysterious ruins are hidden amid this sleepy coastal city.

This Iron Age hill fort remained hidden until a series of storms revealed its history.

This former Union fort commands a fine view of downtown Cape Girardeau and the Mississippi River.

The hilltop ruins of a border fortification in the Italian Alps that was much fought over.

Built in a perfect square, this archaeological site is one of the largest and best preserved ancient fortifications in India.

Built by the Portuguese colonists in the early 16th century, this fort is one of the oldest European structure in Asia.

This monument commemorates the soldiers who fought for 16 hours straight to penetrate this concrete fort.

This half-forgotten fortress was constructed by the Ottoman conqueror of Constantinople.

This beautifully restored fortification kept the city safe for centuries.

The United Arab Emirates's biggest and oldest fort pays homage to a lost era.