This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

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

A small park on Bourbon Street features life-size bronze statues of New Orleans musicians.

A hands-off space for graffiti artists to hone and display their skills.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

An antiquated German apothecary on Chicago's North Side.

Free public park and gardens filled with peacocks and peahens.

Collection of skeletal systems from the "world's leading supplier of osteological specimens."

The only arched bridge made of stone on the entire Mississippi River.

A fitting attraction for the corn capital of the world.

The man who wasn't there.

A modernist landscape of water and sci-fi concrete.

A sculpture of the famous photograph stands on San Diego's "Greatest Generation Walk."

A former electrical substation is now home to an eccentric junk art masterpiece.

The bugs crawling down the front of this office building are almost as big as a '68 VW Beetle.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

This replica of the Greek structure is in the heart of Nashville.

Home to items never before seen by the public.

Cryptid lake monster honored with its own monument.

Scary metal statues adorn some of the signature buildings of Burlington, VT.

This sandstone gorge in New York State's Adirondack Mountains is home to waterfalls, flumes, and more.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

Of the many chalices in the running for the Holy Grail, this one in Valencia Cathedral sure looks the part.