A towering tribute to decisiveness stands on the spot where Brigham Young and his followers decided that this must be the place.

A 90-foot-tall psychedelic "tree" on the side of the highway has baffled passersby for decades.

The highest peak in Utah is the hardest to reach, but only if explorers choose the hard way.

Visitors to this library are in for a real-world education in modernist architecture.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

The space-age building is home to one of the few remaining rotating restaurants in America, and the only one that inspired a 1980s sitcom.

There are lots of hands and feet stamped in the cement in front of Grauman’s Chinese Theater, but Mel left behind something extra.

This concert pavilion on the shore of the Great Salt Lake has been destroyed by fire, water, and disinterest but keeps coming back.

Disks are rolled out onto the south lawn to absorb the impact of Marine One's wheels like giant coffee coasters.

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

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

World-famous, Pink's still manages to keep its prized cult fetish status.

The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

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

Washington's iconic carousel has a nice piece of Civil Rights history.

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

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

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

An obscure public service from the U.S. government that redeems burnt, moldy, and soiled old greenbacks.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

An atomic bomb-proof strongbox protects the U.S. Constitution from terrorists and thieves.