Gorgeous purple flowers drape from the world's largest blossoming plant.

A newspaper building that made radio history.

The American Home, Re-imagined.

Pasadena glamour turned government issue.

Colorado Boulevard’s historic bookstore, operating since the bustling city of Pasadena was merely some orange groves and a few ostrich farms.

A rare surviving example of a pre-WWII Japanese garden, restored after years of neglect.

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

A nursery specializing in strange and beautiful succulents and cacti.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

The ruins of the castle that chemicals built.

The beautiful behemoth is one of the largest trees of its kind in the United States.

Colorful Native American paintings are hidden within this small cavern.

These curious caverns have been home to mushrooms, gangsters, and disco.

The remains of a World War II munitions factory still haunt the fields of this Twin Cities suburb.

Historic funicular railway, believed to be the shortest railroad in the world.

The legendary building that needed ghostly approval before being built.

This former stomping grounds of the most eminent astronomers of the early 20th century.

This little blue house pokes out over the campus of UC San Diego, seven stories high.

A couple turned their front yard into an artistic masterpiece.

An inconspicuous footbridge beloved by San Diego locals.

This plaque marks the spot where the first crossing guards helped get kids safely to school.

Its collection contains relics from the devastating disaster that set the town ablaze.

Built in 1931, this small passageway is believed to be the first modern skyway.

This statue of Olympic hockey coach Herb Brooks immortalizes one of the greatest moments in American sports history.