Trimmings from the record-setting tree line that surrounds Cirencester Park have been used to manufacture chemotherapy drugs.

A open air theatre built on a cliff by an eccentric British woman.

The remains of a small medieval chapel mark the legendary birthplace of the patron saint of Wales.

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

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

This charming railway is one of the oldest and steepest funiculars in England.

Abandoned boats decaying in the largest ship graveyard in mainland Britain.

The world's smallest commercial theater is set up in what was once a urinal for Victorian men.

This fantastic museum honors Gloucester waterway heritage.

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

The now-overgrown beach resort was once frequented by Yugoslav military elite.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

A tiny church on a man-made island in the Adriatic.

These ruins saw a second life as a cemetery.

An ancient knight and a symbol of the city's freedom.

The complex has been abandoned since the Croatian War of Independence, barring a stint as a set for 'Game of Thrones.'

Gargoyle head that brings good luck.

There's a mini version of Iguazu Falls hidden in the Balkans, and it's got a rope swing.

Bridge that died in war and was resurected.

A former fisherman's hut deemed too small for habitation is now a delightful tourist draw.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Since 1947, this living history museum has been providing an immersive look at life in Plymouth Colony.

Hundreds of personalized inscribed planks make up this historic boardwalk.