A rampant horde of demons smirk and snarl at visitors to this church, home to a rare complete set of medieval-era stained glass windows.

This fascinating museum takes visitors through Britain’s Roman past.

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

The lasting remains of the Balloon Section of the British Armed Forces.

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

With lush plants and flowers, huge trees, ponds, and hidden monuments, this place feels a bit like discovering Narnia.

The incredible private taxidermy collection of an eccentric zoologist.

An Iron Age hill fort turned scenic nature park.

In 1943 the British military took control of this village, telling residents they had to leave temporarily. The villagers were never allowed to return.

This public pool is one of the last remaining lidos of the countless built in the 1930's as public works projects in the United Kingdom.

A majestic mansion designed in Mughalai style, complete with a turquoise onion dome.

Home to the most complete dodo remains known - one head, and one foot.

Once part of a living village, these buildings now house exhibits showcasing historical aspects of life in Ireland.

This World War II relic let Allied pilots know they were entering neutral airspace.

You can see three Irish counties from this Neolithic hillside fort, once the seat of the Kingdom of Ailech.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

This museum housed in a former brothel explores the past and present of sex work in Amsterdam.

A naturally mummified 2,000-year-old man.

The sixth of London's "Magnificent Seven" cemeteries, and a source of unlikely inspiration to Beatrix Potter.

A historic London cemetery now serves as a nature park incorporating gravestones & memorial statues.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

The world's first purpose-built motor racetrack was destroyed by the outbreak of two world wars.

Amidst the bustling streets of Dublin, there is a hushed garden that is dedicated to "All those who gave their lives in the cause of Irish Freedom."