Berkeley Springs State Park boasts the nation's only monument commemorating presidential bathing.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

A muscular Art Deco monument represents the struggle between regulators and unbridled markets.

The grand marquee of this abandoned Hawaiian theater remembers the building's elegant past.

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

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

This blowhole is supposedly caused by a trapped monster.

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

This museum of Hawaiian and Polynesian culture is the legacy of the last descendant of the Kamehameha Dynasty.

This industrial area was the dumping ground for massive amounts of trash, some of which washes up as tiny bits of sea glass.

This black shoreline is made up of exploded lava particles.

These ancient sacred grounds granted amnesty to those who managed to reach them.

The Byzantine, pre-Columbian, and medieval art at this stately mansion are some of the most under-appreciated collections in D.C.

Hordes of precariously balanced stone figures crowd the shores of the Hudson River.

Salute the leader of the proletariat.

Hiroshima survivor on Riverside Drive.

Phil Mortillaro uses keys to bring art back to the Village.

This wall on a street corner in Lower Manhattan has been a blank canvas for a rotation of renowned artists since the 1980s.

A bit of retro transportation flair preserved in the world's largest department store.

An artist's cute bronze subway sculptures belie his violent artistic past.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

Slyly buy a shake in the Parker Meridien lobby.