The largest known open fault in the United States is basically a giant natural refrigerator.

Little Red Lighthouse under the George Washington Bridge.

This abandoned seaside fortress is now simply an imposing ruin being taken back by nature.

Cat art as far as the eye can see.

A floating cat sanctuary on an Amsterdam canal.

This historical air terminal in Houston is slowly becoming an aviation museum dedicated to the city's aeronautical history.

There is an unmarked red button hidden over Houston's Buffalo Bayou that is just begging to pushed...

A hidden church in a hidden courtyard tells the story of the Miracle of Amsterdam.

The world's oldest Jewish library was founded by Sephardic Jews in 17th century Amsterdam.

The world's only museum devoted to the wonders of fluorescence.