Once at the center of U.S. finance, the historic Trading Room was meticulously recreated piece by piece and rebuilt in the Art Institute.

A spectacular remnant of an Adler and Sullivan masterpiece that was destroyed in 1972.

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

Home to a protest movement, a bombing, and a dramatic change in labor history.

This bronze sculpture on a former squash court marks the secret origins of the Atomic Age.

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

The site of the first couple's first kiss is commemorated by the most adorable presidential monument ever.

The lighthouse central to the 1980s horror classic "The Fog" is, in fact, located in one of the foggiest areas of the Pacific Coast.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Macabre astrological automaton clock dating to the late 1400s.

A massive 1830s industrial site once known as Czechia's "Iron Heart" has been transformed into a playground of science, technology, and art.

This hanging crocodile is thought to be the "dragon" that once plagued a Czech city.

Mummified monks and the accidentally interred, in a 17th-century crypt.

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.

New York City's smallest piece of private property.

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

A memorial to the first person killed by a motor vehicle in the Western Hemisphere.

Unrepaired walls from a 1920 anarchist bomb attack.

Elevated freight railway turned wildly successful urban park.

All of Chicago's wood-paved streets are long gone but two alleys remain.

World's first "penitentiary," meant to be humane, drove men insane.

Yo, Adrian!

This elaborate towering structure was once famed for its revolutionary height.