Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

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

An extensive, if one-sided, history of U.S. law enforcement's war on drugs.

Once the supplier for noteworthy projects like the National Cathedral, this old brickworks now lies abandoned.

Mexico's first public cable car soars over the congested streets outside Mexico City.

An unlikely Transcendental Meditation haven in the American Heartland built around the ancient Vedic principles of balance and harmony.

Politicians, bureaucrats, and military officers gathered in this field near the Capitol to settle their disputes with blood.

A historic ruin just 20 feet away from a busy highway onramp.

A much-maligned monument to teetotalism.

A rotating bridge that carries a little canal over a larger one.

This sprawling museum holds one man's giant collection of real tanks.

The first purpose-built art gallery in the United States is once again open as a center of craft arts.

The only Civil War battle in Washington D.C. took place near this highest natural point in the city.

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

This pseudo-steampunk weapons facility is the world's largest wood and glue structure, and packs quite a wallop.

A super-sized promotional trick that is now a D.C. landmark.

Giftshop catering to cryptozoologists and anyone with a sense of humor.

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

Ingenious bakery opens up the first Cupcake ATM at their flagship location in Beverly Hills.