The sign to a demolished amusement park now stands in front of a local library.

San Francisco's first World's Fair, dedicated to the wonders of California.

Obscure Freemasons still live in D.C.’s largest private residence.

The most accurate timepiece in the world.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

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

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

The decor of this Hollywood movie palace just barely predated the opening of King Tut's tomb.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

A unique botanical garden housed in three giant geodesic domes.

Former meatpacking facility turned vertical farm and sustainable business complex.

The only presidential monument to display a late POTUS's actual casket.

A jukebox headstone marks the grave of the Cleveland disc jockey credited with coining the term “rock 'n' roll."

Inside the unassuming cemetery chapel is a magnificent stained glass window and mosaics.

The angel of death appears to weep black tears at this grave marker.

A bronze monument to Cleveland's favorite, fastest son.

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

An abandoned convention space that has been left to the homeless and the radical.

A hardware store Buddha statue installed to deter vandalism wound up attracting Vietnamese immigrants who came to pray.

A massive ultra-modern church presents a science-fiction view of Catholicism's inclusive future.

A restored 1920s cascade stairway provides one of the best views of Oakland's Lake Merritt.

A historic and oft-filmed prison stands in a Chicago suburb.

Mussolini gave Cincinnati a bronze statue of Romulus and Remus suckling at a wolf's teats.

The building was originally a gas station built to resemble a Japanese tea house.