The classic Atari game's iconic aliens have invaded downtown San Diego.

One of the largest helium balloons in the U.S. is a 112-foot ginormous orange.

Send a postcard while vacationing with Satan.

This grand stone tower was dedicated to a famed American humorist almost by coincidence.

The haunted reputation of these abandoned Colorado train tunnels is probably not helped by the terrifying spiked fence.

A lively annual event in which thousands of people race to push coffins heavy with bodies up a hill.

There are eight natural springs around town, each with a slightly different taste.

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

The unbelievably opulent home built for an infamous newspaperman.

California's oldest wind harp represents a historic piece of America's Danish history.

With its peeling paint and faded sign, this theater-turned-recycling plant is a nostalgic relic of 1950s Americana.

Coastal dunes, site of buried Egyptian movie set and former utopian colony.

The ruins of the castle that chemicals built.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

When ecosystems collide in the arid Southwest.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

This former sugarcane transport tunnel is now a portal to a lovely beach.

This shop specializes in oddities and Victorian-inspired wonders.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

This super steep hike ascends 2,000 feet in less than a mile.

This replica of the Greek structure is in the heart of Nashville.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

Lonely minaret stump of a destroyed city.