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At Entlas Keller (the duck's cellar), you can visit the extensive underground paths and former beer storage areas. Before artificial cooling was invented, people dug cellars into the hills and brought ice in there to cool the beer throughout the year; at this place you can visit Erlangen's extensive underground.
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Berch
Begun in 1755, this festival is held every Pentecost (Whitsuntide - seven weeks after Easter) for 12 days every year. The first day is always the Thursday before the Pentecost weekend. Similar to Oktoberfest, but more German owing to the absence of tourists. The festival draws crowds around the 1 million mark, so hotels might get crowded and overpriced during this time of the year. At 23:00 the main action stops and the party crowd goes on to the various discos and bars that keep going until 05:00.
The water tower on the Burgberg hill was built to store the city's drinking water supply and can be seen from many locations within the city. It was built in 1904/05 and is still in use.
Between villas, it spans about 30,000 m² and has many old trees. At its upper end, it contains a viewpoint and the best view over the city. A further highlight are the bronze sculptures by Erlangen artist Heinrich Kirchner.
A park around the tiny river Schwabach which begins at the northern end of the old town and spans across Palmsanlage up to the borough of “Sieglitzhof”. It contains open playing grounds (including a water playground for children, located next to the footbridge Steg an der Bleiche near the neurological clinic of the university hospital, to get there take either of the paths next to the house Schwabachanlage 1a) and sports areas and is popular amongst walkers, joggers and bikers.
Historic museum of the city that also has changing exhibitions on various topics. The building dates to the 18th century and used to house the city hall for Altstadt - old town and new Hugenot town being separate for a long time.