Years of archaeology, just chillin' by the water cooler.

All of Chicago's wood-paved streets are long gone but two alleys remain.

Chicago's largest cemetery is full of beautiful Victorian monuments and more than a few ghost stories.

A gothic church spire sits atop this skyscraper, the tallest church in the world.

An enormous park-like oasis, full of famous Chicagoans' graves.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

An abandoned lot littered with concrete debris was once the home of the world's first female railroad president.

Where the first "expert riders, willing to risk death daily" for the Pony Express were recruited.

A mesmerizing disco ball-like sculpture along the Sacramento River Walk.

Pillars made of 700 pieces of luggage climb to the ceiling of Sacramento Airport's baggage claim.

A working miniature city designed to teach kids about safety and presumably city planning.

An eccentric home stands out in an otherwise average neighborhood with mosaics, mini topiaries, and kinetic sculpture.

A tribute to long time Venice Beach resident, artist and actor Dennis Hopper.

An unassuming grey box sitting on San Francisco's Pier 17 is a "sky diary" of the coastal city's temperamental weather.

Iconic Los Angeles residence famous for its 19 statues of Michelangelo's David.

Condemned US Navy seaplane control tower turned officers’ club sits atop Yerba Buena Island.

Some of the most unusual (and in some cases, disgusting) flavors of soda imaginable.

Early prototype for Frank Lloyd Wright's Guggenheim.

Floating man-made island and upscale restaurant.

A rococo retro-futurist future-rustic vernacular between yesterday’s tomorrow and the future that never was.

An invitation-only museum of items natural and bizarre, arcane and exotic.

Furniture tries to escape an abandoned building in San Francisco.

A replica of the first public theater built in California.

Each summer, the migratory bats living beneath the bypass form "batnadoes" at dusk.