Fortresses

This medieval fortress guards a monastery near the border of Serbia and Montenegro.

One of the most studied Iron Age settlements in Europe.

Northern Europe’s largest castle ruins sit precariously on an island cliffside.

The gnarled remains of an exploded German bunker from World War II sit along a breathtaking fjord.

One of the very few mosques built by the Ottomans still standing in Croatia is now a Catholic church.

Used as a military post in three different engagements, this fort has remained incomplete and unfired upon for nearly 200 years.

The famous sculptor had a hand in this imposing fortress.

This medieval fortress is (or was till 2017) the home stadium of the football club FC Duruji Kvareli.

The remains of a 13th-century Romanesque church lie abandoned on a hillside.

The legendary fortress of a female Kurdish warrior leader.

A military fort has guarded the surrounding area from this key position since the 13th century.

One of the last few remnants of an ancient fort which once stood in the oldest area of Pune.

The ruins of a medieval citadel believed to be haunted by a ministry of wish-granting djinns.

An annual goat race takes place within the walls of this medieval castle.

The most impressive of Basel's three remaining city gates.

Distressing images of the Last Judgement adorn the walls of this medieval sanctuary.

Once a safe haven for locals engaged in blood feuds, this 400-year-old fortified tower is now a museum showing what life was like for those lying in wait within its walls.