Once a state-of-the-art tuberculosis treatment spa, these ruins are now ruled by paintball players.

One fisherman has used his love of pebbles and shore to create a crazy garden of rocky art.

These pools have been abandoned for over 20 years.

Long the exclusive domain of birds and vagabonds, this little-known Central Park peninsula is open to the public once more.

A complex, nine-layer maze on the grounds of a Venetian doge's playground.

This abandoned island off the Venetian coast has been a radical monastery, a political prison, and a secret Nazi base.

A small island less than half a mile from Venice is a forbidden island with a dark and twisted past.

This overgrown mountain village has been abandoned for nearly a century.

Island wonderland for communist autocrats.

An eerie, protected forest of old-growth oak trees, many of which are now dead.