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

Site of the greatest known waterfall that ever existed.

People come from across the globe to swim in this lake believed to have healing properties.

A massive volcanic plug is now a protected area that hosts a number of bird species.

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

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

The oldest house of worship in Palm Beach has a wonderful tropical garden.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

Water of undetermined depth has attracted rare fish and cult leaders alike.

Unlike most arches, this geological oddity formed in a volcanic dike.

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

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

The world's longest known cave system.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

Look closely and you’ll notice that the color changes a third of the way up the tower.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

Every week, a festive public jam session breaks out in downtown Asheville.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

The ruins of Theodore Roosevelt's beloved ranch stand in a forgotten corner of a national park named after him.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

The giant pair of sexy legs sticking out the window of this costume store have become its main draw.

An overlooked and unassuming engineering marvel.