One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.

This abandoned NASA launch site is now a memorial to a trio of astronauts who were killed there.

A building so large that it has its own weather.

Disney's abandoned animal island is now an overgrown ruin that was almost the coolest attraction ever.

A clock set into the concrete outside a Manhattan jeweler has been telling time underfoot for over a century.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

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

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

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

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

Artifacts of whaling, with both its perils and adventure, are housed in this museum in a former candle factory.

An enormous, inside-out glass globe built in 1935.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

A vinyl-lover's Shangri-La.

Allowing humans and fish alike to migrate from freshwater to saltwater and back again.

A museum dedicated to the history and exploration of both popular music and science fiction.

An eclectic restaurant serving from and to the nearby Chittenden Locks.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

One of the largest underground systems runs under Canada's largest urban center.

The largest bell in the world has been swinging high above a Cologne cathedral for almost a century.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

Cars mysteriously roll uphill on this street.

Mountain where Jesus was first tempted by the Devil.