The seventh largest spring in the world.

The bad-ass ride of a soul legend, housed in one of the world's few soul museums.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

This architectural triumph is the only Frank Lloyd Wright house in Alabama.

A large AIDS Memorial Pathway art installation provides a moment for quiet contemplation in this public park.

This sculpture forces visitors to confront their relationship with space.

A rotting tree in the middle of Seattle doubles as an elaborately-controlled art piece.

Deep into the lower floors of Pike Place, find a date with fowl fate.

Historic, 19th-century wagon wheel ruts cut into soft volcanic ash.

A mural of the Virgin of Guadalupe painted on the rock wall by canyon's religious namesake.

A hotel with a rich Wild West history of miners and bootleggers.

The hallowed remains of a 900-year old Ancestral Pueblo great house.

This innovative mill was built for a legendary gold mine that never came to be.

When it was built in 1929, this historic bridge was the only place to cross the Colorado River for 600 miles.

The graffiti-covered ruins of an abandoned trading post in the middle of the Navajo Nation.

Red sandstone structures dominate this landscape, which has been inhabited for some 5,000 years.

This magnificent natural sandstone bridge is one of the largest in the world and is an iconic symbol for Lake Powell.

This balancing rock is one of Utah's most unusual geological formations.

The location where the iconic movie character declared it was time to go home.

This small, unassuming street is now a canvas for color and creativity.

Originally conceived as part of a proposed Arizona State Capitol building in the 1950s, this structure built in 2004 stands as a monument to the architect's legacy.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

An assortment of armored tanks and Howitzer cannons in the middle of the Sonoran Desert.

Walk through the actual strap iron cells and solitary chambers of Arizona Territory’s first prison.