Europe's largest prehistoric mound – burial site of a legendary king?

Besieged by war, this castle ruin has crumbled into a peaceful picnic spot.

The largest stone circle in the world has ended up bringing up more questions than it has answered.

This unusual 7th-century Frankish seal offers more questions than answers about its past.

A 16th-century footpath said to be haunted by a young girl that died trapped within its misshapen old house.

A witch wreaks ruinous revenge on this ancient church with her "enchanted leg."

A Byzantine-era church hidden in a wooded area below the Acropolis.

This building has two facades of clashing architectural designs.

Eastern Bloc nostalgia, anybody?

This sign marks the entrance to a tiny proto-state within the small country of Moldova.

A unique collection of Soviet military artifacts lies hidden away in a disused train, in the unrecognized Eastern European republic of Transnistria.

The largest collection of death masks in Ukraine.

Padlocks cover this rickety footbridge with love.

Featured in one of the most iconic scenes in cinema history.

When you've got to go, you've got to go.

This historic island prison holds one of the dungeons from the Count of Monte Cristo even though it is a work of fiction.

Erosion and various mineral deposits give this striking canyon its distinct color and soft appearance.

The notorious Wild West outlaw was raised in this unassuming abode.

A small oasis not far from downtown Moab.

This raised bulls-eye visible from space was the subject of an intense geologic controversy.

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

This gallery of prehistoric red ochre art lines the wall of a scenic segment in Utah's San Rafael Swell.

Local lore holds that Butch Cassidy took an escape route through Red Canyon's sandstone hoodoos after an attempted murder.

A striking, menacing sandstone peak towering above a landscape that's equal parts Mordor and the Moon.