David Galjaard photographs Albanian bunkers in his photo book Concresco.

In Albania today, one bunker stands for every four people who live there. Built during Stalinist Enver Hoxha’s 40-year rule, the more than 700,000 above-ground bunkers dotting the landscape were never used to defend against attack, as intended. Now, they serve as a stark reminder of the Hoxha’s dictatorial reign.