Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

A tribute to Ponce de Leon's supposed quest for eternal youth.

Ornate limestone building now filled with geologic specimens, and more.

The world's largest anatomically accurate brain sculpture.

The world's largest collection of mechanical puzzles is a cornucopia of analog bafflers.

A lesser-known part of the Kinsey Institute is this impressive collection of art, artifacts, and material culture related to human sexuality.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

This ancient Hawaiian henge may have been an early star chart.

An ode to one of the first concerts broadcast via satellite.

During the solar phenomenon "Lahaina Noon" this bendy, curvy sculpture forms a perfectly circular shadow on the ground.

Once the site of the Hawaiian monarchy, this building was originally designed as a palace.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

The air force base preserves its scars from the Japanese attack on Pearl Harbor.

A whopping 14,000 copper coins cover this miniature fighter jet.

This huge work of functional public art replaced a landfill in New Jersey's Meadowlands.

Salute the leader of the proletariat.

A popular European tradition makes its way to the states on one of America's most famous bridges.

Set sail on a small scale.

Hear the tales of New York's most notorious criminals.

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

Where now stands a 42-story condominium tower of marble, glass and steel was once the central market of New York’s slave trade.

Ever wanted the laymen's version of your credit card fine print?

Possible relics of the ancient Roman city are hidden in this restaurant's façade.