Baden is chiefly visited by reason of its hot sulphur springs, which are mentioned by Tacitus and were very fashionable in the 15th and 16th centuries. They are especially efficacious in cases of gouty and rheumatic affections. They lie a little north of the old town at the river. Many Roman remains have been found in and near the gardens of the Kursaal. The town, dominated on the west by the ruined castle of Stein, is very picturesque, with its steep and narrow streets, its old wooden bridge and its one surviving gateway.