One part local history, 99 parts gruesome haunted house.

The rocks in this arid basin leave trails of movement behind them.

The most confusing clock in New York.

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

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

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

The celebrated eyesore created by starry-eyed sweethearts.

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

The largest greenhouse in the world is home to over one million types of plants.

An unfortunate geological resemblance to Satan has labeled this Pasadena gorge as a passage to the underworld.

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

Catacombs turned marketplace.

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

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

Northern Ireland's Brobdingnagian stepping stones.

360° views of the city plus five floors of optical illusions and hands-on science.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.