After the construction of a nearby cathedral obstructed the view, the oldest belfry in Belgium was more than doubled in height.

Museum in a swimming pool where the water still flows.

This triumphal arch celebrating the Sun King's conquest of Lille is a masterpiece of military architecture.

An underground city of ancient quarry tunnels hid thousands of Allied soldiers in WWI.

Built in 1347, this belfry is one of the oldest in the world and survived intense bombing during World War I.

A monument to the thousands of Canadian soldiers who died capturing the French ridge during World War I.

The 16th-century church was kept in its ruined state as a reminder of the casualties of World War I.

On this stunning Scottish island, you can walk in the footsteps of dinosaurs.

Nestled among the living residents is the final resting place of an apothecary plague victim.

An American ghost town hides along a side street in Scotland's capital.

A former medieval fortress, now home to Edinburgh Napier University, contains a rather risqué work of art.