Le Dolmen du Mont Ubé is a Neolithic / Chalcolithic () passage grave which was discovered in 1848 by workmen quarrying for stone. The passge leads into bottle shaped chamber that used to have four internal compartments each blocked with low stone slabs. The capstones were taken as well as all but one of the internal compartments. Within the passage stand three stones that may also have had a low sill at some time. These were later used to block of the passage so it could be used as a pigsty.Finds recovered from the workmens spoil heaps included 10 or 12 pots, a Jersey bowl, vase supports, flint and stone tools, stone axes, polished stone pendants and a grape cup (unique to the Channel Islands). Burnt and unburnt human remains were noted in the cists.References:
The Château du Haut-Koenigsbourg is situated in a strategic area on a rocky spur overlooking the Upper Rhine Plain, it was used by successive powers from the Middle Ages until the Thirty Years' War when it was abandoned. From 1900 to 1908 it was rebuilt at the behest of the German kaiser Wilhelm II. Today it is a major tourist site, attracting more than 500,000 visitors a year.
The first records of a castle built by the Hohenstaufens date back to 1147. The fortress changed its name to Koenigsburg (royal castle) around 1157. The castle was handed over to the Tiersteins by the Habsburgs following its destruction in 1462. They rebuilt and enlarged it, installing a defensive system designed to withstand artillery fire.
The fortification work accomplished over the 15th century did not suffice to keep the Swedish artillery at bay during the Thirty Years War, and the defences were overrun.