A tall smoke stack and boarded-up buildings are all that's left of the pioneering plant.

A frozen relic of Seattle's hydroelectric boom is now a teaching facility for future engineers.

This jazz venue welcomes performers nightly and students daily.

A lush oasis full of vibrant plants and striking geometric displays.

A perfectly circular lake is formed by the crater of an ancient underwater volcano.

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

A store full of vintage and indie toys designed to bring out the kid in even the crustiest of adults.

An emerald-green grotto just a short trip from Austin.

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

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

Turning night into day in Victorian-era Austin to thwart a serial killer.

Locals dubbed it the "Owl Building" because of its bird-like appearance.

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