Designed to commemorate the founding of the first settlement in Delaware.

The site of one of the deadliest skirmishes during the Battle of Fredricksburg.

This demon atop the Notre-Dame de Paris looks utterly bored.

The industrial architecture honors the laborers who brought the Exposition Universelle of 1900 to life.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

An iconic location along the Los Angeles River where countless movie scenes are filmed.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

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

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

This sculpture of a fisherman spent six years at the bottom of the Schuylkill River.

The oldest surviving presidential residence in the United States.

Alexander Hamilton’s creation caused quite a bit of controversy.

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

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

Erected in 1697 this Philadelphia bridge is the oldest surviving roadway bridge and perhaps the oldest stone bridge in the United States.

South Philadelphia is home to Keith Haring's only surviving in situ collaborative public mural.

This elaborate towering structure was once famed for its revolutionary height.

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

Yo, Adrian!

World's first "penitentiary," meant to be humane, drove men insane.