One of the world's oldest and most massive living organisms is a grove of quaking aspens.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

Dramatic river bend surrounds a natural red-rocked pedestal.

This giant temperature attraction created some giant electric bills.

The wild west is still alive and well at this authentic mining town watering hole.

Visitors to this library are in for a real-world education in modernist architecture.

A 90-foot-tall psychedelic "tree" on the side of the highway has baffled passersby for decades.

Come for the speed, leave in love with the desert.

Home to the deepest rift anywhere on Earth.

These black pillars of volcanic basalt seem to call mountain climbers with an unbreakable siren song.

This long, dark tunnel is open to hikers, but those without lights are known to get confused even on the straight path.

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

The last four extravagant street signs of London's historic banking street.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

The handiwork of a underdog clockmaker who solved an impossible problem for an Empire, and forever revolutionized seafaring.

Banksy gives themself artistic license with this piece of London street art.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

The signs of a long buried road can still be found hidden beneath a London sewer grate.

An exotic wildlife habitat right off The Strip.

Make your reservation to have coffee with some kitties.

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

A walk through the historic city center, under the streets of Seattle.