📜 Explore Stachelberg Artillery Fortress, the largest modern artillery fortress in the Czech Republic and one of the largest in Europe, part of the Czechoslovak border fortifications built before WWII. It features an extensive underground system, historical exhibition, and the Eliška lookout tower, built in 2014 and named after Queen Eliška. The tower stands at 632m altitude, offering views from 24.5m high viewing platforms. # Why Go 🏰 Explore a massive fortress with deep underground passages and rich historical exhibitions. 👀 Enjoy panoramic views of mountains, Krkonoše foothills, and Polish border regions from the Eliška lookout tower. 👨‍👩‍👧‍👦 Family-friendly activities like museum scavenger hunts. 🚶 Easy access from parking, with the lookout tower offering free entry. # Why Avoid 🥶 Underground temperature is 9°C, bring warm clothes. 🚶 Underground tour involves 186 steps. 🚫 Some parts may be closed during off-season or for reconstruction. # Tips 🅿️ Parking available about 500m from the main museum, also near the fortress for tower access. 🐶 Dogs on leash with muzzle allowed on underground tour by arrangement. 🚌 Accessible by bus, stop Babí, pevnost (or Trutnov – Žacléř via Babí). 🍽️ Refreshments available near the fortress during main tourist season. # Cost 💰 Underground tour: Adults 200 CZK, Children (6-15) 100 CZK, Family (2+2) 500 CZK. 🆓 Eliška lookout tower: Free entry. # Hours 🕒 Fortress: Seasonal opening, generally 10:00-17:00. November/December limited to Saturdays 13:00, daily 25-31 Dec. 🕒 Eliška Lookout Tower: Open daily from April 1 to November 30; open in winter during favorable weather.