The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

Indents in the pavement are all that remain from a grisly death machine in Paris.

Climb inside an iron crystal magnified 165 billion times its normal size.

France's most famous cemetery, with some of its most curious tombs.

Straight out of a nightmare, barcode-faced babies climb up and down Prague's television tower.

Bullet holes in the church wall are a reminder of the violence that followed the assassination of a high-ranking Nazi officer.

Looming communist pillar with a Czech twist.

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

Macabre astrological automaton clock dating to the late 1400s.

Washington D.C.'s most famous pianist, composer, and bandleader still tickles the ivories outside Howard Theater.

On the Fourth of July this area will transform into a Pompeii-like storm of falling embers and ash.

An amazing example of early-20th-century architecture, this church features marble transported from Utah.

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

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

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

The first memorial dedicated solely to the Black troops who fought for the Union.

Before founding the American Red Cross, Clara Barton had a tremendous humanitarian impact by locating thousands of missing soldiers.

Art deco landmark on the outskirts of Washington, D.C.

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

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

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

The most accurate timepiece in the world.

The house where John Wilkes Booth conspired with his co-conspirators.

The national park was once a plantation estate.