This tiny, hurricane-resistant house in Galveston is one of the city's most notable architectural oddities.

This Dutch Colonial home is the oldest remaining farmhouse in Manhattan.

This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.

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

Even Henry David Thoreau found this glacial pothole irresistible.

An emerald-green grotto just a short trip from Austin.

Macabre astrological automaton clock dating to the late 1400s.

The peaceful space is adorned by paintings by the famed abstract artist Mark Rothko.

Campus tradition says couples who walk beneath this enormous oak will stay together forever.

42nd story Pyramid shaped penthouse tops Seattle's oldest skyscraper.

This former coal gasification plant found a curious second life as a popular public park.

A wall of chewing gum moonlights as collective art.

An old vending machine serves up unpredictable beverages from its seemingly magical insides.

Scale replica of China's ancient terracotta tomb warriors and Forbidden City are the side project of an eccentric millionaire.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

This failed condo development was reborn as a street art hub.

Locals dubbed it the "Owl Building" because of its bird-like appearance.

A store full of vintage and indie toys designed to bring out the kid in even the crustiest of adults.

One part antique store, one part curiosities hodge-podge.

The modern birthplace of Irish freedom.

The 19th-century pharmacy (now a used bookstore) was featured in James Joyce’s "Ulysses," and has changed very little to this day.

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

This one has sailed five times as far as Sir Francis Drake's famous ship.