Apart from the pradolina you find a landscape dominated by moraines and there are even inland dunes. Their fine, light coloured sand was useful once and therefore the area was given the nickname 'the Holy Roman Empire's box of blotting sand'. Another legacy of the glaciers are lots of erratics of every size. In former times they were used for buildings and to pave the streets. So, some of the area's geologists specialized in glacial drift and even analysed the source area of the erratics used for St. Mary's Church, Berlin's oldest church still used for service.
The most exciting geological feature around Berlin is certainly a small area of Triassic limestone just a few kilometres to the east of Berlin at a small town called Ruedersdorf. Triassic rocks are normally buried about 1000 m deep in this area but they have been uplifted by a salt pillow from the Zechstein formation. Since the area is otherwise devoid of hard rock, quarrying has been going on for centuries. Especially when Berlin grew exponentially about 150 years ago, building material was needed in great quantities. The quarried limestone was shipped by boat to Berlin for processing directly through a tunnelled canal connecting the quarry to the nearby natural watercourse. Using boats to transport building material creating the proverb that Berlin was build out of boats.
The Swedish geologist Otto Torell visited Ruedersdorf on his way to a geological conference in Berlin 1875, where he intended to present his theory about inland glaciation of Northern and Central Europe during the Ice Age - and he was lucky enough to find proof in the quarry: striations created by glaciers . The theory was proposed by others before but was not approved until then.
Ruedersdorf quarry is as well the locus typicus (type locality) of styloliths, i.e. the locality where they were first identified by Karl Friedrich von Kloeden in 1828.
Access to the quarry is rarely possible. But from the construction supply industry's open-air museum (Museumspark Ruedersdorf) just beside the quarry you can get a glimpse into the pit. The open-air museum includes a "house of rocks" named after Otto Torell where fossils found in the quarry and various building materials are exhibited. In front of the house you can study bigger blocks of various limestone types found in Ruedersdorf.
Ruedersdorf has been studied by local geologists intensively but - since everything was top-secret - nothing was published between the Second World War and the German reunification. There have been publications since - but in German. Luckily enough there is now the first publication in English available (download it here)!
 Paszkowski, Wilhelm (1910), Berlin in Wissenschaft und Kunst. Available from: Paszkowski [accessed 27 February 2015]
 Torell, O. (1875), Über einen gemeinschaftlich mit den Herren Berendt und Orth nach den Rüdersdorfer Kalkbergen unternommenen Ausflug, Zeitschrift der geologischen Gesellschaft, 27(4) , pp. 961-962. Available from: Torell [accessed 25 February 2014]