Brass cobblestones mark the places where individual Holocaust victims were taken from their homes.

In Rome’s Jewish ghetto, a 200-year-old bakery still makes the neighborhood’s historic sweets.

Plaques on its facade commemorate the Tiber's most destructive deluges.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

An ancient underground cultic temple where sunlight penetrates on the summer solstice.

After over 100 years out of service this landmark windmill once again turns as a symbol of Jerusalem's self-sufficiency.

This unassuming oasis elevated just above the busy streets of Jerusalem offers one of the best views of the Old City.

Take a step into the workshop where Edison and his employees revolutionized the world.

The crumbling remnants of this 19th-century quarantine hospital hint at the touristy island's darker past.

An enchanting natural wonder in Puerto Rico's Camuy River Park.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

The Pennsylvania shopping center was once the setting for the 1978 film, "Dawn of the Dead."

Golden and naked, the figure that was once the highest point in New York is all that remains of the second Madison Square Garden.

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

Yo, Adrian!

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

This Delaware River bridge is emblazoned with a catty slogan from a more prosperous time.

Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

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

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

Legend tells how a Spanish soldier disappeared from this isolated sentry box without a trace.

Tel Aviv's popular neighborhood went though endless waves of transformation.

This full-sized orange tree lives suspended in mid-air above the streets of Jaffa.