The homes stand about the Alte Nahebrücke bridge, which was created of stone in 1300. Standing on 8 supporting columns (referred to as “piers”), it spans The 2 arms with the Nahe river flowing through the town: the Nahe plus the Mühlenkanal - a channel of water supplying the mill. https://jasperxbfil.wikififfi.com/870480/immobilien_no_further_a_mystery