This one-block alleyway is stuffed with street art that is colorful, cultural, and intensely political.

This painted marvel is San Francisco's 400-foot ode to urban biking.

Chevron maintains one “Standard” brand station per state so it doesn’t lose the trademark.

27-room home built with the fortune of a sugar magnate.

Once the largest windmill outside of Holland, with enormous 114 foot sails.

One of few lasting examples of the brief octagon craze that developed into folly.

Adolph Sutro's little-known, geographically inaccurate, deprecated monument.

An overlooked and unassuming engineering marvel.

Controversially claiming the title of world's biggest bass drum, UT's Big Bertha was once made radioactive by the Manhattan Project.

Sports history, made in the Arroyo Seco.

A Community Cornerstone.

The American Home, Re-imagined.

A Masterpiece with a Tragic History.

Originally the home of chewing gum mogul William Wrigely Jr, it is now the official offices of the Tournament of Roses.

A stellar example of Art & Crafts architecture, and a movie set to boot.

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

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

Come crisp December nights, this fairly plain neighborhood becomes a holiday dream world.

One of the world's longest murals depicts the history of diversity in Los Angeles.

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.

The grave of America's 11th president is not in some grand monument but instead it's hidden away on the grounds of the Tennessee Capital.

This replica of the Greek structure is in the heart of Nashville.

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.