The Saalburg is a Roman fort located on the main ridge of the Taunus, northwest of Bad Homburg, Hesse, Germany. It is a cohort fort, part of the Limes Germanicus, the Roman linear border fortification of the German provinces. The Saalburg, located just off the main road roughly halfway between Bad Homburg and Wehrheim is the most completely reconstructed Roman fort in Germany. Since 2005, as part of the Upper German limes, it forms part of a UNESCO World Heritage site. In the modern numbering system for the limes, it is ORL 11.