A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

The house where John Wilkes Booth conspired with his co-conspirators.

The National Park Service’s best-kept secret with views that rival any in D.C.

Sip creative cocktails in the former vault of the Riggs Bank.

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

Send a postcard while vacationing with Satan.

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.

One of many gator theme parks, abandoned in the sugar fields of South Florida.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

"We Seceded Where Others Failed."

These large-scale reproductions of Mario Sanchez’s colorful pictures and murals feel like a walk around a small movie set, and also lead you down an imaginary “street” of past decades.

Recently celebrating its 25th anniversary, the garden opened in September 1997 to celebrate the men and women who have had the greatest impact on Key West.

A historic landmark and museum filled with curious objects representing the history of Key West.

This statue inspired by Renoir's famous painting embodies the jovial spirit of Key West.

The museum chronicling a treasure hunter's dream, fulfilled.

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

A monument celebrating the idea of reaching inaccessible places.

This spiny beast guards an artist's village while vying for the title of largest lobster in the world.

A unique collection of diving equipment spanning antiquity to the present day.

This 140-year-old beacon off the Florida Keys marks the wreck of a Navy ship that once roamed the Caribbean hunting pirates.

This kitsch eatery is chock-a-block with bric-a-brac.

A tiny, unassuming park in Tampa that belongs to the Republic of Cuba.

An eclectic treasure trove of maritime marvels.

This natural spring is the winter home to the largest gathering of manatees in the world.