This lake sits on an estimated 4 million tons of salt.

This tiny little island has, as the name says, just enough room for its single house.

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

This eclectic Austin curiosity shop is home to all things strange and unusual.

Housed in a century-old building, this museum's dedicated not just to soft drinks, but to the free enterprise system.

Visitors can walk over the largest concentration of Columbian mammoths to have died from one event.

This downtown Dallas art installation is always on the lookout.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

A retired oil tanker now offering amazing views of New York City.

A collection of haunted artifacts chronicles the career of the world's most famous paranormal investigators.

Mansion and shopping center used in the 1975 film "The Stepford Wives."

The once abandoned ruins of a Victorian beachside amusement park are now back in working order.

Collect holy water from a Bronx grotto.

A castle inspired by medieval architecture is hidden in the woods of Connecticut.

This historic railway museum may have lost its passengers but not its love for trains.

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

A rocky shelter in the desert hides one of the largest concentrations of cave paintings in Mexico.

The final resting place of the businessman-turned-astronomer who helped discover Pluto stands near his observatory.

A retired subway car stands alone in a field in the middle of Queens.

The location of Puerto Rico's first water bottling plant, thanks to a collaboration between Mother Nature and technology.

Legend says this tiny ancient island is the lost ancestral homeland of the Aztecs.

Abandoned for 60 years, this submerged bridge was completely forgotten until the lake was drained.

This cave system allegedly holds the "metallic library" of a lost ancient civilization.

The fading, forgotten remains of a once bright and booming factory.