The largest of only eight working transporter bridges left in the world.

The only medieval bridge in Britain with its defensive tower still in tact.

This former Welsh metal factory is now a lovely abandoned relic but was once one of the industry's world leaders.

Stroll through Welsh history in a village of reconstructed structures.

A 19th-century funicular railway shuttles visitors up this surprising sea cliff to one of the world's largest camera obscuras.

A real-life Professor Snape once taught in this Welsh university building, which students of course nicknamed “Hogwarts.”

This Roman amphitheater is said to be King Arthur's legendary Round Table.

High Victorian fantasy created a fairytale castle out of a ruined fortress in Wales.

This well-preserved Cistercian Abbey in a romantic pastoral setting has inspired artists like the poet Wordsworth.

A rocky sea serpent hides caves, blowholes, and a spectacular natural bridge.

Three bridges straddle a stream, one stacked upon the other.

A random tree outside a Budapest hotel has become a DIY shrine to the late singer.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

The romantic garden was the epicenter of the Hungarian art scene in the 1880s.

Once the home of a hermetic monk, this cave now houses a small church.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

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

Romania's triumphal arch looks out over Bucharest.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.