This Georgian architectural masterpiece is the only cloth hall left in Britain.

If you dare visit this fort, fire-breathing hyenas might devour your camels.

A Victorian natural history and ethnographic museum with wonderful turn-of-the-century, science-book-esque evolution displays.

The remains of Crystal Palace Great Exhibition of 1851.

Ride in 1960s style on the private luxury train Marshal Josip Tito used to travel around Yugoslavia.

A museum dedicated to the former country.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

Nikola Tesla's ashes are held in a golden sphere, surrounded by his works.

A towering spire in the fortress of Kalemegdan honors the victorious armies of Serbia during their struggles against the Ottoman Empire.

A pair of connected skyscrapers form this symbolic gateway.

A beautiful 19th-century mansion slowly crumbled and became a 'ghost house' after World War II.

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

This snug medieval lane is one of the narrowest streets in the world.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

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

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

This memorial to the victims of the Romanian Revolution of 1989 is often compared to a potato on a skewer.

This once-derelict building is now one of the most beautiful bookstores in the world.

A celebration of all things tacky, garish, and bizarrely creative in the Romanian capital.

One of the best-preserved Roman amphitheaters is still used today, but for less brutal events.

This truly palatial work of Communist-era architecture now sits crumbling on a Croatian beach.

The only gulag ever to exist in socialist Yugoslavia.

Now harmless, this looming post struck fear into the heart of medieval troublemakers.

A musical instrument played by the sea.