The hippo that stands on this university campus was once a drunken flea market purchase.

The National Park Service’s best-kept secret with views that rival any in D.C.

One of the first Second Empire-style buildings constructed in North America.

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

An echo chamber with a waterfall wrapped around its base at the Embassy of Canada in Washington, D.C.

This statue of one of baseball’s greatest pitchers looks like something out of a sci-fi horror movie.

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

This mysterious structure by the Washington Monument is a flood barrier designed to protect the White House against rising waters.

A muscular Art Deco monument represents the struggle between regulators and unbridled markets.

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

Washington's top-secret Cold War-era doomsday communications tower is located in a small neighborhood park.

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

The world's oldest soul food restaurant is also one of its best.

This imposing Masonic temple a mile from the White House was the first public library in Washington, D.C.

A Civil War fort in the middle of Washington, D.C. has been swallowed by a forest.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

The United States Capitol's former columns still stand.

This former train station was once an important shipping depot for the regions farmers.

An oft-overlooked, magically musical monolith that stands majestically between Arlington Cemetery and the Iwo Jima Memorial.

The last early 20th-century schoolhouse in Fairfax County has galvanized the community and engendered a spirit of service among residents.

Built to defend Washington D.C. during the Civil War, this fort became a post-war nucleus for a thriving Black community.

This church is known as "The Home Church of George Washington and George Mason."

A graveyard that dates back over 200 years stands near a busy shopping center.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.