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

D.C. once had its own tiny rival to the New York Stock Exchange.

The word "Watergate" will forever be associated with the infamous scandal in 1972, but this fountain is famous in its own right.

An overlooked memorial honoring the local Washington residents who died in World War I.

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

Before Nixon, "watergate" meant canals.

Amid the sprawling Defense Intelligence Agency Headquarters is one of Washington's least accessible museums.

The "lovely red Vega" of the legendary record-settling pilot.

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

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

The remains of Martha, the last known passenger pigeon, serve as a tool to educate about conservation.

The famous abolitionist’s preserved estate is one of Washington's finest monuments to its great Black citizens.

The walls of the iconic dome are hollow and have a secret stairway.

There’s a hidden military meme engraved on the World War II Memorial.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

Baptisms in troughs and post-sermon rodeos at the world's biggest cowboy church.

The "world’s largest honky-tonk" also has its own indoor rodeo arena.

A health museum containing a 27’’½-foot intestine.

This crumbling UFO is one of only a few remaining "moveable ski chalets" of its kind.

Scale replica of China's ancient terracotta tomb warriors and Forbidden City are the side project of an eccentric millionaire.

Fantastic collection celebrating the final send-off.

This little dolphin is the first monument dedicated to the LGBTQ+ community in the southern United States.

Belly up to the bar in Cowtown, don't forget to buy some boots.

This downtown Dallas art installation is always on the lookout.