 There were eleven "Salinen" (one of which has been renovated and preserved), sometimes called "thorn houses" or "salt works", belonging in the decoction facility, in which brine dripped over a total length of of blackthorn twigs in order to raise the salt concentration of the water before boiling.Salt production reached its high point in the 17th and 18th centuries.After mediatisation, by way of the Principality of Aschaffenburg and the Grand Duchy of Frankfurt Orb eventually came to the Kingdom of Bavaria in 1814.