A creative deviation in this post office's design was once a source of controversy.

Manatees congregate around a power plant's discharge canal where the water is especially warm.

A Circus legend leaves an unexpected endowment.

The unique collection includes bronze cast handprints of some of America's most famous astronauts.

This railroad and oil tycoon's lavish estate now stands as a time capsule of the Gilded Age.

Former villa and estate of James Deering developed to preserve native tropical forests.

Island ghost town detailing Flagler's folly in building the Overseas Railroad.

"We Seceded Where Others Failed."

An idyllic swimming pool tells the tale of Hemingway's trouble with women.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

If all members were present at the table, a sixth of the world's wealth would be under the same roof.

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

Pop culture has helped to keep this iconic British building from being destroyed.

The first geometric self-supporting spiral stairs in Britain are a truly beautiful sight.

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

The celebrated eyesore created by starry-eyed sweethearts.

The curious underground history of keeping Paris clean.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Museum celebrating the ocean, with the largest wunderkammer dedicated to sea exploration.

This communist country can still appreciate its fragrant past.

Once a favorite playground for the world's most illustrious guests, Hotel Nacional's secret weapons and bunkers reveal a more menacing side to its golden history.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.

The house that birthed The Old Man and The Sea is now a museum devoted to the old man who wrote it.