 Roman Turicum was not fortified in the beginning, but there was a small garrison at the tax-collecting point, downstream of the lake respectively Limmat nearby the Münsterhof plaza where the goods were loaded between small river boats (Limmat) and larger ships (Lake Zurich) for the transport on the water route.Commercial and residential buildings were erected in the vicinity of the Lindenhof hill, in later times, "villae rusticae" were established in the present suburban districts.At the present Zunfthaus zur Zimmerleuten at Limmatquai opposite of the Lindenhof hill, the area was stabilized with embankments; some of these mounds date back to the Roman settlement era.