The castle was first mentioned in a document in 1311. It was presumably built 60 years earlier at the behest of the Bishop of Basel. The bishop granted the fortress as a fief to a branch of the Lords of Biederthal, whereupon they began calling themselves “von Rotberg” and rose to high positions of honor. The castle, already in a very dilapidated condition, passed to the Beinwil-Mariastein Monastery in 1636.
Several changes in ownership followed. In 1918, the ruins were purchased by the Allgemeiner Consumverein Basel. In the mid-1930s, the association had the complex rebuilt by unemployed young people and converted it into a youth hostel.
You can sleep and eat just as you would have 500 years ago.
There is a parking lot right next to the castle. To reach the castle by public transportation, take BLT Tram No. 10 to Flüh, and from there take the PostBus to Mariastein, getting off at the “Rotberg” stop.
(Content from https://www.schwarzbubenland.info/kultur/burgen-schloesser/burg-rotberg/)
