The highest bridge in America was built for an almost unnervingly small amount of money.

The world's largest collection of fine-scale miniatures and one the nation's largest collections of antique toys.

The first car-centric shopping plaza in the U.S. brought a little bit of Spain to downtown Kansas City.

Four, 18-foot-tall badminton shuttlecocks lie scattered about the lawn of a Kansas City museum.

An ornate Art Deco tile mosaic representing Nebraskan life, both modern and prehistoric.

A floating cat sanctuary on an Amsterdam canal.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

The attic of a four-century-old canal house hides a clandestine church.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

This Roman arch marks the location of an ancient gate at one of the Seven Hills of Rome.

2300-year-old Roman road connecting the empire.

His "Lionheart" is entombed separately from the rest of his body.

This bridge was constructed from the rubble of the infamous Bastille.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

Indents in the pavement are all that remain from a grisly death machine in Paris.

Cold war icon and onetime "hole" in the iron curtain.

Go surfing on this urban wave, "hacked" by local surfers.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

The most visited, and possibly most controversial, museum in Germany.

The prototype for all Nazi concentration camps.

This abandoned coliseum was intended to be a grand Nazi rallying ground before it was halted at the end of the war.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.