 The hilltop area dominates the city of Zürich alongside the eastern Limmat riverbank, and its northern slope called "Sihlbühl" towards the former Sihl delta marked the northern boundary of the Helvetii and Roman settlement – where the structures of the medieval Oetenbach Nunnery, Waisenhaus Zürich and later the Urania Sternwarte were erected at the present "Uraniastrasse", and therefore important historical archaeaological excavations never were done.To the south, at the St. Peter church hill, there was another cultic construction towards Münsterhof, and in the west the settlement was bounded by the present Rennweg–Bahnhofstrasse lanes and the Münzplatz plaza.The largely flattened Lindenhof area elevates at above sea level, and rises about above the level of the Limmat at the Schipfe–Limmatquai area in the west; probably some Roman buildings were built at the site of the Zunfthaus zur Zimmerleuten on the other riverbank, and the Roman settlement may stretched towards the present Münsterbrücke which is crossing the Limmat between Grossmünster (remains of graves) and Wasserkirche, and the Münsterhof plaza.