A haunting contrast of trains that both saved and took the lives of Jewish children in Nazi Germany.

An artist-run shop filled with art inspired by and made from nature.

This bridge over D.C.'s Rock Creek Park is sometimes called the "Buffalo Bridge" because of its four buffalo sculptures, which were cast from a single piece of bronze.

A brass and marble scale model of the solar system embedded in the concrete.

Watch cheese-flipping robots in action at this factory and museum.

The world's largest second-hand graces a clock surrounded by constantly changing flower beds. 

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

This church on a Tohono O'Odham reservation has stood since 1797.

Formerly the world's largest, this Willy Wonka-esque contraption runs 24/7.

A small store filled with animal skulls and other curiosities.

A memorial in the Tiergarten is a reminder of the suffering inflicted on homosexuals by the Nazi regime.

A home covered with elaborate mosaic and other pieces of art.

This monumental work of art symbolizes the coming together of a previously divided city.

A Rocky Mountain city provides a happy ending for a pinto pony and his Brobdingnagian red chair.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

Dedicated to the European Sinti and Roma peoples murdered during the Holocaust.

Railroad officials in the early 1900s sought to spare travelers the sight of Roman soldiers’ private parts.

In a dry, neglected cemetery lies the unassuming grave of a soldier vilified in life but celebrated in death.

In a small Japanese garden off a busy Denver street, a memorial to a brave, principled politician.

A gorgeous mural outside a beloved D.C. restaurant pays homage to famous Black Americans.

The original burial place of this preeminent 18th-century Jewish philosopher was razed by the Nazis.

This concrete residential area doubles as an open-air gallery.

One of the oldest Mexican restaurants in the United States air-dries its trademark beef in a dangling outdoor cage.

A focal point of in Denver’s skyline for over a century, inspired by a Venetian basilica.