Four bald cypress trees in Lafayette Square, across from the White House, mark the southern edge of a 100,000 year old cypress swamp.

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

There's an old indoor swimming pool hidden directly underneath the White House Press Briefing Room.

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

A local dialect born in the late 19th century is only spoken in this isolated California valley.

Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.

One critic described it as "middle Mussolini, early Ramses, and late Neiman-Marcus." Another called it an architectural "natural disaster."

"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!”

The grand marble structure next to the White House is Andrew Carnegie's temple to Pan-American diplomacy.

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.

Lucha Libre (Mexican Wrestling) themed taco shop.

Peace Park and the Atomic Bomb Dome.

A plaque marks the site directly below the mid-air detonation of the atomic bomb over Hiroshima.

The 10,000 Torii shrine.

After a profound show of devotion for his master, a dog becomes the symbol of loyalty for an entire nation.

A 20-meter (65-foot) robot towers over Tokyo Bay.

Tokyo’s only Vaudeville-cuckoo clock–steampunk-Victorian curio cabinet time piece.

Not quite the menace it once was, this monster still has some chops.

Megachurch turned Catholic church comprised of 10,000 glass panes.

This Italianate house was the childhood home of the prominent Canadian painter, Emily Carr.

A glimpse into the "Logging Capital of the World" at a time when there was far more forest and far less machinery.

Stairs often replace streets on the steep slopes of this old mining town.

The largest known Ancient Egyptian obelisk.