San Francisco's newly reopened hands-on science museum.

Tiki luxury on Nob Hill.

The preamble to the U.S. Constitution written entirely from vanity license plates hangs in the Smithsonian museum.

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

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

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

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

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

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

Fittingly, America's museum of architecture is itself a magnificently designed old building.

A historic neighborhood church is reborn as a psychedelic arts collective.

A museum and memorial built amid the rubble of a town obliterated by nature.

An out-of-place slice of France, smack in the middle of Shanghai.

The once highest point in China blends symbolic design with a kick of adrenaline.

This probably wasn't what Mao had in mind.

The most famous location in China was home to whole dynasties worth of imperial rulers.

The Laureates here get something even more coveted than a Nobel Prize: free parking for life.

The century-old bell and clock tower at UC Berkeley is the third-tallest in the world, and has fossils.

Only hotel where you can legally launder money.

A man-made island in scenic San Francisco Bay.

Golden Gate Park's historic collection of plants.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

This private residence was the template for one of the most beloved television homes of all time.