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.

A beautiful geyser under environmental threat.

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

A multimedia experience that chronicles the atrocities of racism.

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

Thousands of migrating monarchs overwinter clustered amongst the eucalyptus trees.

This municipal playground was co-created by the father of one of the most playful characters ever.

A giant donut stands as a popular symbol of Los Angeles iconography.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

Austin’s nonprofit-run graffiti park where street art is meant to be painted over.

Locals dubbed it the "Owl Building" because of its bird-like appearance.

Turning night into day in Victorian-era Austin to thwart a serial killer.

Free public park and gardens filled with peacocks and peahens.

The original Garfield station is the oldest station facility on the "L", with the station house dating from 1892.

Allowing humans and fish alike to migrate from freshwater to saltwater and back again.

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

A daily replay of the experiment that proved the rotation of the Earth.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

This elaborate towering structure was once famed for its revolutionary height.

The first American department store, and home to the largest operating musical instrument in the world.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

This supermarket is suspended 25 feet above an interstate highway.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.