One of the largest Buddhist stupas in North America is built of concrete designed to last 1,000 years.

The scene of one of the darkest moments in American labor history has been left essentially untouched since the tragedy.

At the tallest peak in Colorado, an electrifying mix of thin air, lightning, and rivalry.

The world's largest carnivore sanctuary is home to over 450 meat-eating rescues.

The largest source of fossilized insects anywhere.

The highest paved road in North America winds its way up Mount Blue Sky in Colorado to an altitude of 14,130 feet above sea level.

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

When ecosystems collide in the arid Southwest.

The highest bridge in America was built for an almost unnervingly small amount of money.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

The largest self-built castle in the U.S., six decades in the making.

This private home is famous for appearing in the cult-classic "Twin Peaks" series.

One artist's yard is full of shining, whirling kinetic sculptures that look like pure steel psychedelia.

Twin Peaks' real life Double R Diner has been restored to its damn fine television look.

Make your reservation to have coffee with some kitties.

A huge musical sculpture and other art installations on the National Oceanic and Atmospheric Administration grounds.

Bronze statue marks the spinach capital of the world.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

This tiny movie theater was the last one in the U.S. constructed in the Nuevo Deco architectural style.

The 2,000-year-old beam is tucked within the pedestrian entrance to the old London Bridge.

While he no longer has an eatery to give him context, this off-brand Paul Bunyan still holds his giant hot dog with pride.

Fresh wooden posts have been added to ancient holes to recreate a primitive henge clock.

A notorious Route 66 eatery once frequented by Al Capone.