2 The "AB" Underground Printing House, Lithuania

All reading materials in the Soviet Union during the Cold War had to be government approved, but two men in the town of Kaunas—Vytautas Andziulis and Juozas Bacevičius (The "AB" name comes from their surname initials)—found a way around this. They built a secret printing house beneath Andziulis' greenhouse, accessible via a movable cement watering pool. Here they printed nearly 140,000 censorship-free materials on a small printing press between 1980 and 1990, all dealing with Lithuanian history, philosophy, and religion. The two men were never caught.

Today the printing house operates as part of the Kaunas War Museum, seen above, which is dedicated to Lithuanian military history. Visitors can tour the 'printing dungeon' to see the original press, as well as an exhibition on Lithuania's resistance printing.