A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

The ruins of a 12th-century Cistercian monastery can be found alongside World War II tank traps and pillboxes.

A monument to one of the most famous modernist Chinese poems and its poet.

This sculpture combines the literary Alice with her real-life inspiration.

Featuring the last fully walkable parapet walkway in Europe.

These ancient monoliths make up one of the largest archaeological sites in Palau.

An often overlooked ancient site in downtown Athens with substantial history (and nature).

An ancient woodland that inspired a young J.R.R. Tolkien.

Hidden in a high mountain cave, this hermitage dates back to the ninth century.

This ancient castle has been abandoned since the Edwardian conquest of Wales.

Magnificent frescoes decorate the interior of this Romanesque church, which also showcases an unusual phenomenon during winter solstice.

The last remnants of a massive medieval wall that once encompassed the city of Berlin.

Named after a lodging site that existed nearby, a bridge has existed at this location since 1455.

An ancient Phoenician citadel once stood at the site where Queen Dido first landed, according to legend.

This hill and tower are steeped in legend, from King Arthur to the Holy Grail.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

This museum offers a journey back to the Belle Epoque era of Romania.

A hidden gem in the middle of the city's infamous Jewelry Quarter.

A "simple-hearted artist" turned an isolated Icelandic valley into his own art museum.

This carved memorial is dedicated to the miners who died working in the town's collieries.

This memorial commemorates a defining 16th-century battle between English and Scottish forces.

These ruins have been linked to a sherbet factory that exploded, but the story may be entirely fictional.

The healing properties of this well attracted royals and commoners throughout the Middle Ages.

This once-majestic, now-abandoned Victorian castle has seen better days.