An enormous park-like oasis, full of famous Chicagoans' graves.

Better known as the "Body Farm," this unique research facility has been studying how human bodies break down since the 1980s.

Historic funicular railway, believed to be the shortest railroad in the world.

This natural wonder drops 16 stories straight down through rare flora and streaming waterfalls.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

See massive fossils that are over 200 million years old in northeastern Arizona.

The one-time watch house for incoming ships at the Golden Gate now stands abandoned and hidden in trees.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

This geothermal hot spring hides beneath a slowly growing mineral dome.

A reproduction of earth's many biomes.

The largest earthwork effigy in the world.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

Breathtakingly blue walls shimmer inside the "Glacier Behind the Town."

This naturally-sourced hot spring is now home to a clothing-optional resort.

Quite simply the largest tree in the world (by volume).

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

Seattle's own bad art museum located inside Cafe Racer.

Carved by a waterfall in a hard-to-reach rock formation, this heart-shaped rock has inspired romantics for decades.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

A technicolor place of worship for Elevationists.

An acoustic anomaly with a mysterious cause.