One of the largest underground systems runs under Canada's largest urban center.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

This plaque marks a place where one of Hollywood’s most famous dancers got his start.

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

Frank Lloyd Wright’s most iconic home dangles over a Pennsylvania waterfall.

Steepest flood safety railway in the entire world.

An exotic wildlife habitat right off The Strip.

One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.

Fans of vintage Vegas, kitsch, and toy pony-based gambling now flock to a casino called The D.

A blacklight mini-golf fever dream pays tribute to the iconic rock band.

The 25th President's marble casket can be visited in this classical Ohio tomb.

The palatial McDonald's that inspired Wesley Willis.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

A display of magnificent stained glass windows is the first exhibit of its kind.

This museum celebrating the almighty dollar lets visitors literally stand in the shadow of a million bucks.

A gothic church spire sits atop this skyscraper, the tallest church in the world.

A monument to the art of slicing people open.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

Once the most painted on object in the world, this short campus fence is well on its way to being so again.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.