π Largest museum of Czechoslovakian fortifications in the Czech Republic. π Located in the Bouda artillery fortress, one of five completed and fully accessible fortresses. # Why Go π° Explore 1.5 km of underground passages and five bunkers. π« See the unique K-S22 HorymΓr object for a retractable rotating gun turret. π‘οΈ View a large collection of gun ports, armor fragments, and original narrow-gauge railway wagons. πΆ Varied tour lengths from 50 minutes to 400 minutes. π¨βπ©βπ§βπ¦ Family-friendly with various tour options. π² Enjoy scenic access routes in a forest massif. # Why Avoid π₯Ά Underground temperature is 4β10 Β°C, requiring warm clothing even in summer. π Animals are forbidden inside the fortress. βΏ Not suitable for wheelchairs due to stairs and uneven terrain. # Tips β° Arrive 15 minutes before your tour. π§₯ Wear warm clothes and sturdy shoes. π Large groups should book in advance. # Cost π° Adults 130-710 KΔ depending on tour length, discounts available. πΈ Photo/video with tripod 100 KΔ. π Children under 6, journalists, and tour bus drivers enter free. # Hours π Daily May-September, weekends in October-November. ποΈ Closed December-April, except for special events. β±οΈ Tour times vary by month and day. # π ΏοΈ Parking Available at SuchΓ½ vrch, guarded during season. # π» Toilets Chemical toilets available near the fortress.