The world's largest kaleidoscope, designed by a 1960s psychedelic artist.

This abandoned cemetery is crumbling into ruin, exposing the artifacts and bodies buried there.

The remains of what was once the world's steepest passenger funicular.

A 19th century hat factory still stands as a crumbling ruin in upstate New York.

This abandoned factory on the Hudson River once churned out a million bricks a week.