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

A free, canine-friendly alternative watering hole near the more famous Barton Springs.

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

Free public park and gardens filled with peacocks and peahens.

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

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

Home to an endangered salamander, a full moon celebration, and a large spring-fed outdoor swimming pool.

This simple frog painting created by musician Daniel Johnston embodies the spirit of Austin.

This downtown Dallas art installation is always on the lookout.

This head-spinningly bizarre Depression-era art cave is wall-to-wall quartz and Jesus.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

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

This curved Manhattan building was built to house the opulence of John D. Rockefeller's oil empire.

The one-time office of the architectural firm that ushered in the Gilded Age is now a Club Monaco.

One of the few remaining American elm trees in New York’s Tompkins Square Park was the birthplace of a new religion.

Beautiful mosaics cover the first stations opened on New York City's newest subway line.

This anonymous businessman sculpted in bronze became an enduring memorial after 9/11, and had been mistaken by rescue workers for a survivor in the rubble.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

The home of the first American-born saint is one of the only curved buildings in New York.

Walking around West Harlem reveals a scavenger hunt of beautiful bird murals.

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

This magnificent herd of stampeding elephants has been frozen in time for over a century.

An eerie diorama that captures the majestic nature of a few prehistoric-looking beasts.