fortress

The Great Wall

An ancient and audacious architectural marvel over 12,000 miles long.

A colorful Spanish colonial town surrounded by fortifications.

A medieval fortress town in a dramatic location, perched on cliffs.

A massive mud-brick fortress, the capital of the Banu Nebhan and the centre of Ibadism in the Middle Ages.

A historic castle used as palace, fortress and prison since the days of William the Conquerer.

An important example of military fortress architecture on a group of islands off Helsinki.

An ancient walled city where Ottoman structures were built on top of a Crusader-era fortress.

A 17th-century British fort built by imported African slaves to defend St. Kitts against the French.

Six ornate and unique forts, legacies of the Princely Rajput states.

A charming and well-preserved colonial fortified city in Sri Lanka.

A city and military complex that exemplify Caribbean cities of the British colonial period in terms of their architecture and layout.

A largely intact earthen fortified village that lends insight into traditional Moroccan life.

Colonial-era structures that demonstrate defensive architecture as it was adapted from European designs for a tropical environment.

Impressive fortifications and the original urban center of a historically important city.

Ruins of Spanish colonial-era fortifications extending along the Caribbean coastline of Panama.

A planned 18th-century walled city, famous for its pink architecture.

A remarkably well-preserved complex of medieval Muslim architecture mixing Moorish and Spanish elements.

A classic medieval fortified town with intact walls, a castle, and a Gothic cathedral.

An excellent example of colonial military architecture in an important location for Caribbean exploration and trade.