A curious collection dedicated to human and animal anatomy and pathology.

When Croatia became independent of Yugoslavia, the splintering governments left behind these concrete tunnels.

Croatia's towering concrete blossom grows from the site of a World War II concentration camp.

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

The complex has been abandoned since the Croatian War of Independence, barring a stint as a set for 'Game of Thrones.'