Three prestigious academic collections come together to create a world-class natural history museum.

Visitors can walk over the largest concentration of Columbian mammoths to have died from one event.

A historic covered bridge, only one of two remaining in North Carolina.

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

A living archive of urban activism and space reclaimed.

This bright yellow relic is the final survivor of a short burst of seashell-shaped petrol pumps.

This museum celebrating the almighty dollar lets visitors literally stand in the shadow of a million bucks.

Graffiti, cars, and religion combine to create this jungle of scrap in the Nevada desert.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

A museum within a museum, devoted to history's most questionable medical devices.

A WWI fighter plane and turn-of-the-century penny candy shop are among the unexpected features of this Financial District building.

An astounding collection of medical specimens, including bits of President Lincoln.

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

Fantastic collection celebrating the final send-off.

Giant origami sculptures tucked into desert scenery beckon passers-by to explore further.

A secretive collection featuring objects that were designed specifically for U.S. intelligence operations.

An Escher-inspired library dedicated to the wonders of the human mind, yet closed to the public.

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

Less a museum than a bizarre fantasy world created by artists and engineers.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

America's only nuclear missile silo open to the public.

The home made famous by the 1983 holiday classic is now a perfectly preserved shrine to the movie.

One of the oldest living oak trees in the Southeast.