A strange rock in Chicago marks the spot where a tree once stood in honor of the 18th President.

A hollow cement depiction of time's inexorable effect on the human body.

The original Garfield station is the oldest station facility on the "L", with the station house dating from 1892.

An outdoor urban gallery of large-scale artworks by the world's most influential street artists.

Recovered suit of a cannibalistic West African gang.

Curious crustaceans support an obelisk from ancient Egypt that now stands in modern-day Central Park.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

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

A memorial to the first person killed by a motor vehicle in the Western Hemisphere.

The highest point in New Jersey is marked by a massive, if simply named, obelisk.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

These eerie outliers of the lightning bug family glow a mysterious blue color.

This weeping, 10-foot-tall sculpture was a maquette for a 9/11 memorial.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

The 72-foot giant escaped confinement in a large patch of mulch only to be reburied in the sandy shores of the Potomac River.

A memorial dedicated to a highly decorated Marine and Korean War veteran, who also happened to be a horse.

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

This research center for rare prosimians is studying how they sleep to help prolong human life.

This giant iron playfully pays tribute to an early 20th-century architectural trend.

Who needs fancy modern water slides when this giant North Carolina rock works just as well?

A 315-foot spire jutting out from the Blue Ridge Mountains makes for breathtaking views.

This roadside attraction has been serving out its fair share of hearty folklore and chaos since 1858.

This metal disk commemorates the birth of a historic American holiday.

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