A former insane asylum despised by Nelly Bly and Charles Dickens is now fashionable apartments.

This outdoor gallery of graffiti-covered walls pays homage to the past, present, and possible future of street art.

This plot of old-growth forest is the largest surviving remnant of New York City's original woodland.

One of only two commuter aerial tramways in the United States.

Mysterious 500-year-old tapestries depict a unicorn hunt.

A blend of art, antiquities, and Americana fill this museum, surrounded by whimsical, enchanting gardens.

Manhattan's lighthouse, erected at the insistence of the unsinkable Molly Brown.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

A bit of retro transportation flair preserved in the world's largest department store.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

Look closely and you’ll notice that the color changes a third of the way up the tower.

The site of Paul Revere's historic two lantern warning.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

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

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

The celebrated eyesore created by starry-eyed sweethearts.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Designed to commemorate the founding of the first settlement in Delaware.

This restaurant's specialty is "a major enigma for food historians."

Deliberately hidden for centuries, the magnificent Saadian Tombs were eventually uncovered in 1917.

The largest madrasa in Morocco once housed more than 900 students within its exquisite walls.