Visit Himeji Castle, a UNESCO World Heritage site and one of Japan's most iconic and well-preserved feudal castles
Visit the largest castle in the world by land area, located in Malbork, Poland, and explore its medieval history and architecture.
The largest ancient castle complex in the world, with St Vitus Cathedral, the Golden Lane cottages and the hourly guard change.
The Hwaseong fortress walls to walk in a loop, and the fried chicken street below them.
The town of a thousand windows: Ottoman houses stacked up a hillside below a still-inhabited castle.
The Cathedral of St James built entirely of stone, four fortresses and the boat to Krka waterfalls.
A Roman aqueduct of 167 arches without mortar and the fairy-tale Alcazar that inspired Disney.
'Here Portugal was born': the castle of the first king and a UNESCO medieval centre.
Edward I's ring of eight towers and the most complete medieval walls in Britain, on the Snowdonia coast.
Kronborg, Hamlet's Elsinore, guarding the narrowest point of the Oresund opposite Sweden.
A 17th-century British fortress on a volcanic hill, the "Gibraltar of the West Indies", with views to five islands.
The oldest of San Marinoโs three towers, an 11th-century fortress on Monte Titano with views to the Adriatic.
Second tower on Monte Titanoโs highest summit, home to the ancient-arms museum.
Cliff-carved tunnel fortifications.
Clifftop Spanish fort over San Juan.
Mighty medieval castle, UNESCO-listed.
Mountaintop fortress, UNESCO-listed.
Dutch colonial ramparts around a living town of boutique hotels, lighthouse and cricket on the green.
Fairytale medieval walled city, UNESCO-listed.
The oldest European building in sub-Saharan Africa, a haunting slave-trade fort.
Ottoman stone city below a hilltop castle.
A fortified hill inhabited for 5,000 years, its medieval stone ramp and gate towering over the old city.
Ancient Dilmun fort by the sea, UNESCO-listed.
One of the oldest continuously inhabited sites.
Sobering slave-trade fortress, UNESCO-listed.
The "Camelot of Africa" โ a walled compound of 17th-century stone castles built by Ethiopian emperors.
Ottoman-era citadel quarter stacked above the bay of Algiers.
Sea fortress islands off Helsinki, UNESCO-listed.
16th-century castle, UNESCO-listed.
One of Europeโs largest castle ruins, sprawled across a travertine hill.
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