This mysterious hilltop collection of Druid carvings isn't quite what it seems.

In the ancient Woolley Woods, an art project promises access to new worlds.

A seaside town with no sea in sight.

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

This captivating Bronze Age timber circle spent centuries concealed by the tides.

The wreckage of an old coastal trading vessel is only visible at low tide.

A mysterious crater-like pond has a spooky tendency to empty and fill with complete disregard to rainfall patterns.

Almost too short to be an actual street, this stretch of road maintains a unique moniker.

A beautiful Kentish country intersection hosts a tasty little photo spot.

Ramsgate’s Royal Harbour has the unique status of being the only Royal Harbour in the United Kingdom.

This longship was a gift to commemorate the 1500th anniversary of the Anglo-Saxons arrival in England.

This oak sculpture at the edge of a small woodland is nine feet tall and shrouded in mystery.

The remains of this 2nd-century Roman temple are incorporated into a modern building.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

Ancient ruins hidden underneath a modern luxury hotel.

A forgotten "city of water" underneath the famous Trevi district.

A sculpture serving as an homage to Pope John Paul II.

Installed in an act of one-upsmanship, the annual sundial in this church is also a symbolic victory for the Gregorian calendar.

An ancient Egyptian obelisk is now used to commemorate fallen Italian soldiers.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

This unassuming bridge is most likely one of Michelangelo's unfinished masterworks.

The final resting place of the poets Shelley and Keats.

The largest cave chamber in Britain—big enough to fit a whole cathedral inside.

This octagonal cottage is the smallest and the oldest council house in the United Kingdom.