The only known Futuro house in North Carolina sits along a stretch of desolate highway on the Outer Banks.  .

The remains of the iconic train crash from the movie 'The Fugitive' can still be found rusting along the Great Smoky Railroad.

The U.S. Supreme Court's secret Cold War relocation facility in the mountains of North Carolina.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

A massive sustainable farm designed by the mastermind behind Central Park.

Cryptid lake monster honored with its own monument.

Scary metal statues adorn some of the signature buildings of Burlington, Vermont.

This 38-drawer structure claims the superlative title, but it isn't the world's only giant filing cabinet.

This London marker celebrates the spot where the world-famous English band was founded.

An architectural oddity hides in plain sight on this iconic London bridge.

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

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

Giant, friendly pelicans in Central London, the most unlikely of places.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

A toy store with a century-long history preserves the craftsmanship of playthings of the past.

A makeshift shrine to the late rock star is still kept up on the nondescript façade outside 1 Logan Place.

Eighty million natural history specimens call this gargantuan museum home.

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

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

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

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.