An enormous, inside-out glass globe built in 1935.

A unique music museum housed in a historic Boston theater.

A downtown park built on top of unclaimed graves.

A collection of over 15,000 zines works to preserve DIY publishing culture.

Where scientists keep miles of very valuable ice from Antarctica and Greenland from melting.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

This unassuming North Austin neighborhood was built to test the novel idea of home air conditioning.

This seaworthy collection was sparked by one man's passion for sailing.

A huge musical instrument played by the ocean.

A modern mechanical planetary system, part of a 10,000 year clock.

The only theatre in the world constructed specifically for sound movement.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

The lecture hall where Alexander Graham Bell first demonstrated the long-distance phone call.

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

A view-altering observatory at the University of Texas.

A collection of 100 brains preserved in jars on the UT campus.

This eclectic, mosaic-clad home includes a bamboo ping-pong loft and a "Whispermaphones" intercom.

The oldest of only three existing statues of the great novelist stands in a city he did not care for.

An Irish Memorial commemorating those who perished due to potato blight.

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

A museum dedicated to the strange and extravagant costumes and memorabilia of the mummers, a tradition older than Philadelphia itself.

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

In the early 1800s, surgery was also a show.