This trio of Australian rock spires may have inspired aboriginal legend or just modern tourism.

Native Australian lizards inhabit this garden celebrating Sydney and its sister city in China.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

A unique geological area spiked with wind-carved rocks that resemble teepees.

A multi-storied adobe complex has been inhabited for more than a thousand years.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

This Maine bridge may be the last wire-supported bridge of its type in the world.

This stone gatehouse was once the entrance to a historic mountain resort, and it had a cameo in a cheesy cult horror movie.

100 massive sculptures in the Hudson River Valley.