Oldsburg Castle is a ruined archaeological monument located near the city of Colmar, and it was built in 1279; It was listed by the French Ministry of Culture in 1840 as a historical monument, and then the castle was restored during the 1990s to become a cultural and historical center; It is a must to visit it to get to know it by going on customized tours with guides who speak many international languages and enjoying the surrounding scenery and views.