Here are some useful links for active people:
Additional recommendable private swimming pools:
Furthermore there are various small lakes around Cologne that can easily be reached by public transportation.
Restaurants located close to the Carl Duisberg Training Center:
Restaurant Tips for Cologne:
In supermarkets like Rewe, Edeka or Real you can find wide range of everyday products:
Discounters like Aldi, Lidl, Netto and Penny have a smaller range of products but low prices make them popular.
Sunday shopping: Cologne Central Station
Second hand: https://www.ebay-kleinanzeigen.de/stadt/koeln/
Used bicycle market:http://www.fahrradmarkt-koeln.de
African shops:
Asian groceries:
Flea Market: https://www.koeln.de/koeln/einkaufen/flohmaerkte
Halal: Online Shop https://www.halal-online-shop.de/
Kosher: http://www.koscherland.de/
Latin America: http://www.holamundo.de
The Cologne museums are listed on the following website: http://www.museenkoeln.de/home/aktuell
Municipal Library (Stadtbibliothek)
Josef Haubrich Hof 1 (Neumarkt)
Tel. 0221/22123828
Opening hours: Thuesday & Thursday 10–20 hr, Wednesday & Friday 10-18 hr, Saturday 10-15 hr
https://www.stadt-koeln.de/leben-in-koeln/stadtbibliothek
University library (Universitäts- und Stadtbibliothek Köln)
Universitätsstr. 33
Tel. 0221/4702374
Opening hours: Monday & Wednesday 9-16:30 hr, Tuesday & Thursday 9-18 hr, Friday 9-13 hr
https://www.ub.uni-koeln.de
Theatre-Opera (Schauspielhaus/Oper)
Offenbachplatz, Tel. 0221/221-28400,
http://www.buehnenkoeln.de
Philharmonic Hall (Philharmonie)
Bischofgartenstr. 1, Tel. 0221/20408-0,
https://www.koelner-philharmonie.de
Further offers
Information related to various Cologne theatres can be found at:
http://www.theaterszene-koeln.de
The Cologne University of Music (Dagobertstr. 38, close to Ebertplatz) holds free concerts: http://www.mhs-koeln.de