The river flows first southeast and then northeast to Ulm, one
thousand, five hundred and nineteen feet above sea level. At Regensburg
it reaches its most northerly point, and from thence its course is
generally southeast. Between Regensburg and Vienna the banks of the
river are frequently remarkable for their romantic beauty. At Tuttlingen
it contracts and the hills crowd close to the banks, while ruins of
castles crown almost every possible summit. The scenery is wild and
beautiful until the river passes Sigmaringen.