A living antique aviation museum in the historic town of Red Hook, New York.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

This unique house, the only one of its kind in Brooklyn, was built as part of a real estate developer's showcase.

A Collegiate Gothic quadrangle that surrounds an 18th century secondary school whose financing came from the likes of Alexander Hamilton and Aaron Burr, among others.

New York's southernmost subway station is whimsically wavy.

The home of aviation trailblazers, in a remote corner of the big city.

Con Edison’s exotic and heat-loving pests.

Micro-distillery in Brooklyn produces New York’s first homemade rum since Prohibition.

Enormous crabs, bioluminescent jellies, and other amazing creatures from the ocean’s depths—some of which are in an aquarium for the first time ever.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Every equinox this Maya pyramid puts on a spooky ancient light show.

This one-of-a-kind convent boasts a kaleidoscopic exterior of stars and double-headed eagles.

A mysterious, abandoned Chinese building in Mexico pays homage to the area's East Asian immigrants.

Three sinkholes filled with warm, crystal-clear water reached by a horse-driven cart on an old train track through the jungle.

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

Iconic red and white plaques show the creative names invented to navigate the city streets.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

60 feet of towering steel balances gracefully.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

A three-story, three-dimensional hobo clown in a tutu welcomes CVS shoppers.

Amid the marketing blitz of modern Times Square is an elegant holdover from its showbiz glory days.

The 28-foot granite map plots the locations of 40 theaters in New York City.

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

The seawater playground of gilded-era San Francisco burned to the ground in 1966.