A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

This small, ancient Roman temple was once a church dedicated to the patron saint of penitents.

Located inside a former bread factory, this museum explores a century of transportation history through innovations that were extraordinary or failures—sometimes both.

Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.

One of Amsterdam's narrowest houses is located right across the canal from its widest.

J.R.R Tolkien, C.S. Lewis, and other "Inklings" met at the Oxford pub to discuss the now legendary fantasy stories they were writing.

The stoic structure boasts a whimsical set of stained glass art commemorating Lewis Carroll.

The shop where the girl who inspired the beloved character once bought sweets is now a book-themed commercial curiosity.

Inside this church is an obscure piece of art carved by the famous Alice Liddell.

A gift from Japan, 17th-century lantern stands among the cherry trees at D.C.'s Tidal Basin.

An overlooked memorial honoring the local Washington residents who died in World War I.

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

Decades before the scandal, this staircase on the river was a literal "water gate."

A super-sized promotional trick that is now a D.C. landmark.

An atomic bomb-proof strongbox protects the U.S. Constitution from terrorists and thieves.

A factory in Milwaukee where poop is reclaimed… and recycled.

Opened in 1956, the first modern indoor shopping mall in the world was inspired by the shopping arcades found in European cities.

After the musical legend's death, his memorial was mysteriously graffitied in gold.

Home to a vast collection of The Wizard of Oz memorabilia and the site of an infamous theft.

These crudely shaped folk giants may be the the second most photographed statues in the U.S.

A bronze statue on a downtown corner honors Minneapolis's favorite career gal.

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

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

Home to the Amorphophallus titanum "Corpse Flower," which is among the largest flowers in the world and also smells powerfully of rotting flesh when in bloom.