Free public park and gardens filled with peacocks and peahens.

A grove of colossal man-made flowers built to collect the sun's rays.

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

To honor a beloved Austin radio DJ a neighborhood bridge has been covered in a loving mosaic.

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

Decaying military base deactivated in the 70s is now visited by urban explorers and military enthusiasts.

Crumbling hotel echoes with the sounds of the '30s.

Austin’s nonprofit-run graffiti park where street art is meant to be painted over.

An eerie and beautiful group of columns mark the site of a grand mansion lost to time and fire.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

Once one of the largest producers of pig iron in the world.

One man's attempt to create an artistic wonder on a run-down block in Detroit.

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

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

A huge musical instrument played by the ocean.

Less a museum than a bizarre fantasy world created by artists and engineers.

The world's longest known cave system.

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

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Built by prisoners of war, the largest small-scale model ever built includes eight miles of tiny streams that now sit abandoned.

Now abandoned, this East Austin school for the disabled began as the "State Colony for the Feeble-minded."

This relatively recently abandoned brewery is a tragic reminder of the continuing effects of Hurricane Katrina.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.