One of the few standing Roman lighthouses and a labyrinth of tunnels are a couple of the secrets at this historic castle.

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

This historic building displays the remains of a victim of the devastating 14th-century plague.

A long, winding trek rewards you with a gorge so captivating it inspired a painting in the Tate.

Fantastically decorated underground chambers built in the 1760s.

The quiet field that inspired one of the most famous songs of all time.

Historic cuisine meets fine dining in a hotel-restaurant overlooking Hyde Park.

The oldest residential street in Europe also features an optical illusion.

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

The sumptuous ceiling was one of the last things Charles I saw before his execution.

St. Mary's Asylum was isolated and abandoned before being converted into a Bed and Breakfast.

An English artist has turned an unassuming ex-council house into a time-lost house of mystery.

These lovely Turkish-styled baths were brought back to life after winning a reality show competition.

The beloved fantasy novelist is buried near a church containing a whimsical etched glass window full of Narnia favorites.

A beautiful ruin of a 14th-century Plantagenet castle built by a medieval mercenary.

This beautiful "lagoon" is actually a toxic soup filled with cars, carcasses, and trash. When warnings couldn't stop people from going for a dip, the town dyed it black.

On this wooded path, a stained-glass window creates a spellbinding forest cathedral.

The oldest candy store in the world has been selling traditional sweets since 1827.

This foolish Victorian sea fort was converted to a deluxe hotel.

One of the largest sculpture collections in the U.K. features history's greats, from Bob Dylan to Galileo, in bronze.

Stonehenge has nothing on Castlerigg’s views.

Harry Potter once visited this massive limestone cliff, which was carved by an ancient glacial river.

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

A house of bones — but nobody is quite sure to whom they belong.