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

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

The national park was once a plantation estate.

Perhaps the most scandalous statue of America's first president.

This lovely pocket park is one of the most under appreciated in D.C.

A historic arena where the Beatles played their first concert in the U.S.

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

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

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

Decades before the scandal, this staircase on the river was a literal "water gate."

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

The most accurate timepiece in the world.

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

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

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

The Byzantine, pre-Columbian, and medieval art at this stately mansion are some of the most under-appreciated collections in D.C.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

The most decorated dog of World War I is preserved in the Smithsonian.

A nostalgic bibliographic gem.

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

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

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

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.