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

Remnants of a Victorian garden feature sitting in public woodland.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

Hear the quietest sound from across the dome.

A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

An unusual round church in London with a Templar past.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

The longest non-mortared wall in the country is one man's tribute to his displaced Yuchi ancestor's five-year journey to her homeland.

A humble garage, world-famous for being the epicenter of a technology revolution.

The abandoned bathhouse is all that remains of the hot springs considered Florida's original tourist attraction.

A volcanic tunnel illuminated by natural skylights offers a shaded respite from the desert sun.

Huge spherical rocks in the middle of the prairie.

Dozens of lights dangle from the branches of what may be the brightest tree in Los Angeles.

Bloodstains can still be seen in this medieval church where two medics saved lives on D-Day.

This unique historical monument features large concrete spheres designed to resemble fallen stars.

One of America's first planned communities is preserved in a state park.

The first presidential bomb shelter was located in an old vault under the Treasury, connected to the White House via tunnel.

The maximum security facility was once thought to have "the bloodiest 47 acres in America."

An ever-growing literary collection housed in the apartment where the Russian author penned his final novel.

This shop for all your super spy needs hides an educational secret.