This huge, disused viaduct is now a crumbling concrete underworld of covered in years of graffiti.

This old cement mine has been used as everything from a mushroom farm to a recording studio.

These World War I shooting range tunnels are now haunted halls of underground graffiti accessed through the roots of a tree.

35,000 grape hyacinths flow like water down a garden hill.

Abandoned Japanese ghost town gives a glimpse into what our own metropolises may leave behind.

The world's largest drain sits below the city of Kasukabe, Japan.

This spa theme park lets its guests take a dip in pools of coffee, wine, or ramen broth.

This faux-seedy Japanese arcade is made up to look like a maze of alleys straight out of a cyberpunk dystopia.

A sculptor's dream castle turned fantastical ruin.