The Museum and Stachelberg Artillery Fort - Krkonose Mountains, Czech Republic - War and Military Museums on Waymarking.com

The Czechoslovak government built a system of border fortifications, as well as some fortified defensive lines inland, from 1935 to 1938 as a defensive countermeasure against the rising threat of Nazi Germany. The objective of the fortifications was to prevent the taking of key areas by an enemy (not only Germany but also Hungary) by means of a sudden attack before the mobilization of the Czechoslovak army could be completed, and to enable effective defense until allies (Britain and France and possibly the Soviet Union) could help.

The Czechoslovak border fortifications

The several of Museums of Czechoslovakian fortifications exists and Stachelberg Artillery fort is one of them. The museums are usually in hands of enthusiasts who repair forts and they are also guides in those forts.

The Artillery fortification Stachelberg was planned to be the largest fortress in Czechoslovakia - four infantry forts, two artillery forts, two forts for mortar turret, two forts for artillery turrets and one entrance fort, but only one infantry fort, T-73, was completed.
A group of enthusiasts repaired this fort, one light fort and two heavy forts near the fortress, but they aren't a part of Stachelberg. There is an exposition of historical photos of this fort. The visit takes about 60 min. Visitors can also visit a part of the underground.