📜 Retired Chilean submarine, built in 1971 in Scotland, now a static visitor attraction and maritime museum in Valdivia. 🔍 Named after John Thomond O’Brien, an Irishman who fought in the Chilean Wars of Independence, it served the Chilean Navy for 25 years. # Why Go ⚓ Explore a Cold War-era submarine, offering a unique chance to delve into its torpedo rooms, accommodation, and control room. 🚶 Guided tours provide insight into 70s submariner life and naval history, educational for all ages. 🏞️ The museum is located in Valdivia's Calle-Calle River. # Why Avoid ⚠️ Steep ladders, unsuitable for claustrophobia sufferers, and not accessible for wheelchairs or those with mobility issues. 👟 Requires flat, closed shoes. # Tips 🎟️ Purchase tickets from a booth on the quayside. ⏳ Tours last 40 minutes, departing every 50 minutes. 👷 Hard hats are provided for low ceilings. # Cost 💰 General admission is 3000 CLP, with discounts available for students, elderly, children, tourists, and delegations. # Hours 🕒 Open Tuesday to Sunday, with guided tours available in the morning and afternoon.