Harder layers in colorful sandstone weather out as prominent “fins" and even more intricate and bizarre shapes.

Now home to a drinking establishment, this building has a macabre history.

The biblical sculpture honors those who lost their lives, homes and communities to the Chernobyl disaster.

Nearly 300,000 acres of wildlife, natural splendor, and a hidden ghost town have been designated a national monument.

A bright little alley in La Boca is a part of tango history.

This stunning mass of ice spans 121 square miles and is still growing.

An abandoned whaling station on an active volcano offers hot springs in Antarctica, surrounded by ruined giants of industry.

A series of waterfalls so massive they straddle the border of Argentina and Brazil.

Grotto replete with mystical designs laid out in glued shell mosaics.

This derelict superstructure was a very important warning system for the Soviet military.

A tower devoted to — and modeled after — the Divine Comedy.