Fort Rapp, Military museum in Reichstett, France.

Fort Rapp is a military installation in Reichstett with barracks, blockhouses, powder magazines, and sheltered passages forming a defensive network. The construction spreads across a large area with many rooms serving different military functions.

The fort was built between 1872 and 1874 under German command to protect Strasbourg from artillery attack. It formed part of a larger chain of fortifications erected across this region.

The fort is built entirely of Vosges sandstone, a Biehler-type fort with a dry moat. It was renamed in 1918 after General Jean Rapp, who was born in Colmar. Since 1996 it has hosted events such as the Monster Run.

Visitors can explore the site and are best guided through its various areas by organized tours. The terrain is uneven in places and there are many steps, so proper footwear is recommended.

The fort was decommissioned by the army in 1968, then cleaned and restored between 1992 and 1993 before opening to visitors on 4 April 1996. It was listed as a monument historique on 23 August 2001. Its dry moats run about 900 metres around the fort, 4 to 6 metres deep and 9 to 13 metres wide.