Military outdoor museum Smečno, at the western wall of the castle park, Smečno, Kladno District. There is a refurbished blockhouse made of reinforced concrete (A-3/41/B2-80 Z light pillbox), model 37 - an object of prewar Czechoslovak line of light fortifications around Prague (VOP), including roadblocks and original interior equipment. The object was built in 1937.