Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

Gaze upon chocolate sculptures depicting everything from chariot races to Gaudí's famous church at this shrine to sweets.

Rather than a run-of-the-mill franchise hotel, this lodging has been decked out in dinosaur decor.

This super steep hike ascends 2,000 feet in less than a mile.

Once considered the height of medical modernity, this structure is now the oldest remaining component of Roosevelt Hospital.

The rough and tumble president's childhood home displays the shirt he was once shot in and the speech that saved him.

A posh members-only club with a literally dramatic history.

Nikola Tesla's former home contains an homage hidden from plain sight.

This Fifth Avenue church has long been the favored worshiping place of Broadway actors and vaudeville performers.

The former hotel where Tesla invented the radio.

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

These abandoned ruins in the middle of Jaffna have withstood centuries of tumultuous power struggles.

One of the Eight Wonders of Kansas and the first official National Natural Monument these stark formations look like nature's Stonehenge.

Those belting out show tunes might not realize this piano bar marks the site where Thomas Paine died in 1809.

Hidden behind a gate in Greenwich Village is a little farmhouse that once served as the writing studio of a bestselling author.

Double spiral staircases are not unheard of, but they are very rare.

Defying all odds, this lonely little tree found a home on a log sticking out of a Canadian lake.

Gothic tower mentioned in Thomas Hardy poem "The Channel Firing."

The UK's oldest theme park slowly slips away.

The beautiful non-repeating pattern honors the Oxford professor who discovered it.

The bizarre headgear looks like it was made for a fool, not a king.

The beams of the New College, Oxford dining hall come with an amazing story.

These 20-foot jaw bones honor a time when the leviathan bones were a sign that whalers survived the hunt.

Home to Alan Turing, the cracking of the Enigma code, and Captain Ridley's shooting party.