Museum of the fortifications in Hlučín, Military fortification museum in Hlučín, Czech Republic

MO-S 19 Alej is a standalone infantry blockhouse of the Czechoslovak fortification system, built in 1935–1938 to the III resistance grade with a 2.5 m thick ceiling. It has two observation bells fitted with light machine guns and a cupola with twin heavy machine guns. The interior is restored to its 1938 appearance, with a unique 47 mm fortress anti-tank gun model 36 in the right firing room.

The fortifications were built in the 1930s when Czechoslovakia decided to protect its borders against growing threats from neighboring countries. After the Second World War, parts of the system continued to serve military purposes during the Cold War before being opened to the public.

The area is part of the TECHNO TRASA trail linking industrial monuments of the Moravian-Silesian Region, and in September a march follows the Czechoslovak fortification line. Visitors can also walk the 6.5 km green-marked educational trail from infantry blockhouse MO-S 16 Rozcestí past light and heavy objects to MO-S 24 Signál.

The underground sections stay cool throughout the year, so bringing a light jacket is a good idea even in summer. Guided tours are the best way to follow the layout, as the passages can be hard to navigate on your own.

The left firing room of MO-S 19 shows the reconstruction and development of gun mountings, while the right room holds a rare original 47 mm fortress anti-tank gun, model 36, with its mounting and optics. The object was opened to the public on 28 September 1988.