The Stonehenge of Wales is one of the grandest neolithic dolmens still in existence.

This allegedly haunted 16th-century tower house-turned-museum exhibits thousands of spectacular objects.

The oldest continual pilgrimage site in Britain was supposedly created by a gruesome beheading.

No one knows who created the statues or if they are arranged properly—let alone the artwork's real name.

A meandering boardwalk across the bogland leads to a "stairway to heaven" with sublime views.

The largest oak in England is said to have been the hideout of Robin Hood and his Merry Men.

A harem-inspired Moorish fantasy design in a Victorian-era Welsh castle.

This lovely little burbling creek is actually a deadly waterway that has dragged down everyone who ever set foot in it.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Eyam took steps to quarantine themselves and keep the plague from spreading.

This elaborate Byzantine-style building was designed for a not-so-pretty purpose.

A Roman spa buried deep beneath the City of London.

Legend says this cave housed a 16th-century cannibal and his family of 48.

In Twickenham sits a small whitewashed castle that inspired Mary Shelley's 'Frankenstein.'

The remains of an ancient Roman teenager are memorialized at the base of a modern London landmark.

The granddaddy of English geoglyphs dates back to the late Bronze Age.

This Gothic Revival castle used as a shooting location for "The Secret Garden" and other films.

This romantic, decaying 13th-century ruin on the edge of Sherwood Forest is reputedly one of England's most haunted places.

A 4,500-year-old forest is slowly being revealed from beneath the sands of a Welsh beach.

Possibly the oldest living thing in Europe, more likely a pagan survivor.

This ethereal, rainforest-like gorge is home to waterfalls, quaint bridges, and fairy folk.

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

Fantastically decorated underground chambers built in the 1760s.

Summer in Scotland begins with a spectacularly wild and colorful event rooted in ancient pagan traditions.