Military outdoor museum Smečno, at the western wall of the castle park, Smečno, Kladno District. There is a refurbished blockhouse 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 design. Exhibition of military vehicles on adjacent land is also a part of the outdoor museum.