📜 Former secret storage facility for foreign policy documents, declassified in 2018. 🔍 Located 43 meters underground, similar to Moscow Metro depth. # Why Go 🕵️‍♂️ Explore a genuine Cold War bunker and authentic atmosphere 🚀 Experience a nuclear attack alert siren and wear a gas mask 🚪 See active 10-tonne blast doors and hermetic doors 🚶‍♀️ Walk through cast-iron tunnels like Moscow Metro 🗣️ Guided tours available with historical information # Why Avoid 🤰 Not recommended for pregnant women, people with walking problems, or claustrophobia ⚠️ Requires descending and ascending 43 meters via metal stairs, no lift 💧 Dark tunnels with potentially slippery, wet floors # Tips 📞 Book by preliminary appointment only ⏰ Arrive 10 minutes before tour, door closes after start # Cost 💰 Individual tour (1-10 persons) with English guide costs 18,000 RUB. # Hours 🕒 By preliminary appointment only, check timetable for availability. # Getting There 📍 7 min walk from Paveletskaya metro station.