The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

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

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.

"Congress may voluntarily remain in session throughout the summer, in order that our Congressmen may be protected from the intolerable discomforts and dangers of the ordinary outdoor weather!”

This local gem houses the largest collection of pre-Raphaelite paintings outside of the U.K.

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

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

Light bulbs, scrap wood, and tinfoil comprise this homemade throne of the gods.

A failed piece of Orientalism has become the proud symbol of a community.

Frank Lloyd Wright’s most iconic home dangles over a Pennsylvania waterfall.

The fastest transatlantic ocean liner sat abandoned in a Philadelphia shipyard for decades.

World War II-era bunkers are hidden under the beaches of this picturesque park, which is still scattered with wartime watchtowers.

This splendid Versailles-inspired mansion has the largest French-style formal gardens in North America.

This weeping, 10-foot-tall sculpture was a maquette for a 9/11 memorial.

A grotesque Fiji merman dwells within this traditional Dutch-style building.

These lush botanical gardens employ the most purrfect pest control force.

Enchanting gardens surround a derelict mansion, all hidden in plain sight behind a stone wall.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

Look closely and you’ll notice that the color changes a third of the way up the tower.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

The first American department store, and home to the largest operating musical instrument in the world.

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

The historic home still shows the scars from a little run-in with the British in 1813.