These pretty kitties killed and ate as many as 135 railway workers.

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

This historic hotel invented the chocolate brownie.

A century-old hotspot for jazz, frequented by everyone from Charlie Chaplin to Al Capone.

A Bibliophile's Dream.

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

A gorgeous mural outside a beloved D.C. restaurant pays homage to famous Black Americans.

Through the decades, Black music stars have performed at this historic hub for music and the arts.

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.

The innocent intentions of this monument are somewhat lost in the sculpture's muscled imagery.

A line of blue paint marks the route of the inaugural parade.

Before Nixon, "watergate" meant canals.

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

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

When it comes to handsignals (and colonialism) rock always beats scissors.

The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

The bridge's highly-contested plaque (once again) honors Confederate President Jefferson Davis.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

FDR's Art Deco hospital tower was hopelessly inefficient.

She stares out across six lanes of traffic, clutching a musket and infant with determination.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

The library houses an incredible collection of some of the world's most impressive books and manuscripts.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.