The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

These unassuming lighthouses have seen the first reading of the Pledge of Allegiance, the first wireless transmission, and more than one mystery.

These medicine cabinet staples are part of the museum's collection of everyday objects.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

Try not to get slimed in Tribeca.

This "second" cemetery represents New Orleans' attempt to keep cholera at bay.

This knobby, drooping New Orleans oak is a favorite place both for climbing and for meeting giraffes.

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

Step into Monet's world at this fine-dining restaurant in the middle of a New Jersey sculpture park.

The way these carnivorous dinosaurs are posed is an homage to a classic work of paleoart.

A wooden theatre that remains the heart of a charming Victorian-era New Jersey enclave.

Infamous marsh filled with toxic waste, World War II-era London rubble, and dead mobsters galore.

A diorama of the Civil War, fought by cats.

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

This elaborate towering structure was once famed for its revolutionary height.

The world’s first penitentiary, meant to be humane, drove men insane.

Captain America, Sub-Mariner, and the Human Torch were all born in this art deco Manhattan masterpiece.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

Tucked in the back of this amazing antique store is an important piece of medical history.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

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