This working class sculpture pounds his hammer all the livelong day.

A colorful architectural gem in Seattle's uniquely modern Central Library.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

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

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

A pair of mutilated bronze octopuses slump at the base of the monument honoring California's admission to the U.S.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

Early prototype for Frank Lloyd Wright's Guggenheim.

The largest land animal skull ever discovered.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

The future of roadside attractions is this sci-fi soda mecca that is home to a 66-foot tall neon pop bottle.

Collection of skeletal systems from the "world's leading supplier of osteological specimens."

The tree is thought to be the oldest oak in Texas and was once crowned state champion for its monumental size.

This failed condo development was reborn as a street art hub.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

One part antique store, one part curiosities hodge-podge.

Three hundred years of preserved Spanish colonial history in San Antonio.

A 131-year-old wunderkammer of Texas history.

A National Historic Landmark with a scenic clock tower and park filled with deer and peacocks, plus a military museum.

The only museum dedicated to the history of the "Magic Lantern," a medieval slide projector.