This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

Abandoned railway line circling the city of Paris.

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

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

A public art jibe at one of the United States’ oldest and longest-serving senators.

The 28,000-year-old specimen is remarkably intact.

A surprising, but overlooked example of geology in the middle of the nation’s capital.

The early data processor factory founded in Washington for the 1890 U.S. Census went on to become IBM.

For 60 years, the academy had no permanent location until members voted Washington D.C. as its forever home.

The preamble to the U.S. Constitution written entirely from vanity license plates hangs in the Smithsonian museum.

Architecture lovers won’t stop touching the National Gallery's 19.5 degree marble prow.

The discovery site of the "Capitalsaurus," the official dinosaur of Washington, D.C.

This robust fence in front of a historic Georgetown home is likely made from hundreds of recycled Revolutionary War firearms.

Go take a picture with the inventor of the daguerreotype photographic process.

A little marble compass above George Washington's (empty) tomb in the Capitol marks where D.C.'s four quadrants intersect.

The span is crooked and made from two older recycled bridges.

Four bald cypress trees in Lafayette Square, across from the White House, mark the southern edge of a 100,000 year old cypress swamp.

The most accurate timepiece in the world.

A celebrity from the late Cretaceous period.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

When it opened during the final years of the embargo, all the drinks and cigars were free.

The national park was once a plantation estate.