Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

The blinking light atop the iconic landmark has been sending secret messages for decades.

A collection of more than 12,000 shoes, displayed in a building shaped like a shoebox.

Since 1973, this block has been home to the most concentrated collection of murals in San Francisco.

Sports history, made in the Arroyo Seco.

The national park was once a plantation estate.

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

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

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.

Concrete strongholds stand guard over the Golden Gate.

This shop specializes in oddities and Victorian-inspired wonders.

Avoid gangster interaction while window-shopping.

Pop culture has helped to keep this iconic British building from being destroyed.

The highest point in Washington state is a volcano covered in glaciers.

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

Washington's iconic carousel has a nice piece of Civil Rights history.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

The most confusing clock in New York.

At 207 feet, one of the world's longest continuous escalators.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

If you want to talk to the Pope you will have to stare down this surreal vision of Jesus rising from a nuclear hell.

A former major munitions plant that has been converted into a sprawling art space.

Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.