The sanctuary seems to either float atop the water or sink into the dirt, depending on the water level.

The ruins of a Massachusetts prison farm can still be found crumbling the woods of a state park.

A labyrinthine underworld of tunnels and caverns hides beneath the city.

In the quiet village of Fulmodeston, the ruins of a medieval church remain hidden among vines and foliage.

A large collection of steam engines, organs, and fairground attractions.

A 15th-century house single-handedly disassembled then reassembled bit by bit 100 miles away.

The control tower at the historic weapons range is now available as a highly unusual vacation rental.

Peek inside restored planes at this off-the-beaten-path collection of aviation archaeology.

A spiral staircase connects the limestone cave with Pembroke Castle, birthplace of King Henry VII.

Several land speed world records were shattered at this Welsh beach.

The most historic church in Fairfax County played a role in the creation of the American Red Cross.

This eclectic antique shop is home to the taxidermy remains of a celebrity lion named Simba.

A petite castle folly in the English countryside.

An ode to the classic piece of British street furniture.

A 19th-century British industrialist built this Louis XIII–inspired chateau for his homesick French wife.

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