The beautiful baroque library of the Hapsburg empire.

A decaying, yet still functioning, work of communist architecture.

A striking symbol of the Bulgarian capital.

This 11th-century structure is one of the oldest churches in Romania.

Once the legendary capital of the Dacian Kingdom, this city has been reduced to mere ruins.

A medieval church built up to defend its village.

A stunning 18th century pharmacy and medieval chemist's collection.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

Oriental bazaar in the heart of Sarajevo.

A museum on the history of Paris, including a set of Napoleon's toiletries, Proust's room, and relics of the Revolution.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

A surrealist timepiece by the artist of melting clocks.

A condom-covered Thai restaurant that is more concerned with birth control than food.

Gilded heaven for philatelists and architecture freaks, still in full working order despite sitting atop tremulous ground.

This small museum explores questions of representation, diversity, and identity.

Backwards hour and minute hands and a timing mechanism that fluctuates with the temperature led to this clock tower's local nickname.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

Now abandoned, the world's first torpedo factory is crumbling into the sea.