The B-Werk in Besseringen is a panzerwerk, a defence system, which was built between 1938 and 1940 by Hitler.

The casern of the 4th Cuirassier Regiment of Bitche is built in a German architectural style during the mid 19th century. It consists of pink sandstone.

the Celtic ring wall encircles the Dollberg, a hill about 695 metres above sea level near the town of Otzenhausen.

military bunker from 1906, part of the Verdun fortification

In the 17th century, Louis XIV had the medieval upper part of the town (the former Longwy-Haut) destroyed in order to rebuild in its place a new town structure which was to serve as a defensive lin

Hackenberg Fortress is the largest fortification on the Maginot Line with underground corridors exceeding 10 km in length, 19 artillery combat blocks and anti-tank ditches measuring over 800 m in w

this superterranean eight-storey air raid shelter was built in 1938 and measures 23 metres in height. During World War II, it could provide shelter from air raids to approx. 200 people at a time.