The largest collection of historic military firearms in the United States.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

Canada's largest dinosaur skeleton was hidden away in storage for more than 40 years.

For almost a century, this East Village newsstand has served egg creams to beats, hippies, punks, and everything in between.

A massive Montreal stadium that has seen nothing but trouble since its inception.

The tiniest little stage in New York.

A second generation sun-powered marvel lights up the night.

Over 120,000 curious objects that have shaped our modern world.

An abandoned water sports stadium that has become a haven for graffiti and decay.

A fearsome dragon clings to a corner of Munich's city hall.

Taoism, Buddhist and Confucianism are all represented in this temple that claims to answer anyone's wishes.

Built hundreds of years ago this downtown iron barrier once protected a much despised king.

In the power of this waterfall, Alexander Hamilton saw the potential for industry.

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

Thomas Edison's home and final resting place also boasts an impressive garage, where some of the earliest electric cars are on display.

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

Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.

In the mountains of West Virginia is this perfectly preserved Art Deco train station.

A well-preserved example of an early industrial operation in the northeastern United States.

This stone tower was built to protect Crete from incoming pirates.

The place where World War I began.

Locals dubbed it the "Owl Building" because of its bird-like appearance.

Space-age monument to an early 20th-century uprising.

The summer home and later final residence of acclaimed American sculptor Augustus Saint-Gaudens.