South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

The unique collection includes bronze cast handprints of some of America's most famous astronauts.

A building so large that it has its own weather.

The place where Samuel "Slater the Traitor" brought the Industrial Revolution to America.

The world's third-largest crystal sphere has sat in the Penn Museum since 1927 with the exception of one outlandish theft.

This North Carolina store preserves a historic moment in America's movement for racial equality.

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

This woodland architectural installation acts as a camera obscura for the heavens.

Art Deco urban decay at this historical building.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.

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

A museum dedicated to the history and exploration of both popular music and science fiction.

A towering tribute to decisiveness stands on the spot where Brigham Young and his followers decided that this must be the place.

This museum glorifies the humble potato.

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

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

A gigantic 10-foot tall stone man.

The site of Paul Revere's historic two lantern warning.

This landmark cemetery in Boston was created more than 300 years ago.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

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