A local landmark with generations of spraypainted messages, and more being added each day.

One of the best places in Florida to spot rare, carnivorous pitcher plants.

This now-deactivated naval base defended the Florida coast for centuries.

The "worst battleship ever built" is enjoying a grand second act, submerged 30 feet in the Gulf of Mexico.

A charming "tea atelier" hidden away in Greenpoint, Brooklyn.

This landmark building is now a vibrant performing arts space with musical acts from around the world.

Avoid gangster interaction while window-shopping.

The greatest real estate coup of all time.

This elegant Colombian fortress was one of the torture headquarters for the Spanish Inquisition.

An inspired museum dedicated to the patron saint of enslaved people, inside the cloisters where he lived and died.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

A layered tribute to the work of mosaicist Isaiah Zagar.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

The most gigantic, swoony, intimidating trio of fingers in all of antiquity.

A stone circle on the slopes of a Caribbean volcano commemorates the leader of an anti-slavery uprising.

At first glance, little checkered structures on the hillside look like they house the living, not the dead.

A devastated ruin in the south of Belize where British explorers claimed to unearth the Mitchell-Hedges Crystal Skull.

A massive underwater sinkhole made famous by Jacques Cousteau.

One critic described it as "middle Mussolini, early Ramses, and late Neiman-Marcus." Another called it an architectural "natural disaster."

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

Washington's iconic carousel has a nice piece of Civil Rights history.

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.