National Redoubt, Military complex in Switzerland
The National Redoubt is a vast defensive network of fortifications in the Swiss Alps, built to protect the nation during World War II.
Construction began in 1880 and continued until the end of the Cold War, making it one of the longest military construction projects in history.
The National Redoubt symbolizes Swiss neutrality and independence, reflecting the country's commitment to self-defense.
Today, some parts of the Redoubt are open to the public as museums, offering a glimpse into Swiss military history.
Despite its extensive fortifications, the National Redoubt was never actually used in combat.
Inception: 1940
Source: Wikimedia