This tiny Bulgarian town offers a stunning location in the mountains and a storied history.

This historic black and white monastery is one of Bulgaria's architectural jewels.

The ceiling of Prohodna Cave in northern Bulgaria affords a peek at the sky via two deity-sized-eye-shaped holes.

An abandoned saucer-shaped monument in the Bulgarian mountains.

The holes in this wall provide a glimpse into Jewish life in Budapest, both past and present.

A triumphant marble and bronze fountain depicting a 15th-century Hungarian king and his hunting party.

The geographical center of Budapest is marked with a 10-foot-tall stylized zero.

Budapest's Communist-era statues, banished to the suburbs.

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.

The highest peak in Wales is said to be the final resting place of a giant killed by King Arthur.

A miniature Italianate fantasy village on the coast of Wales and the set of ITC classic "The Prisoner."

An array of ancient artifacts from Bronze Age Bristol and other civilizations are housed in this museum.

This wooden chair dates possibly back to the 15th century, and commemorates a local legend.

A neolithic dolmen that was rebuilt after collapsing during the 19th century.

One of the highest Roman forts in Britain is set amid dramatic scenery on a notoriously difficult road.

This intriguing Bronze Age artifact spent centuries hidden within a Welsh faerie hill.

This amazing trail among the many waterfalls around Ingleton has been enchanting visitors since 1885.

This bewitching Babylonian goddess haunts a hallway of the British Museum.

The highest peak in all of England is plagued by dangerously fickle climate shifts.

A hundred copies of Antony Gormley's naked body stare out across the water.

A gorge full of caverns where early humans lived alongside cave hyenas, giant mammoths and wooly rhinoceroses.