Criminal activity in Cologne is similar to other big cities. Tourists should take normal safety precautions, particularly in the city centre, where pickpockets are known to be active. Also, be careful on the Ring, which is full of clubs and night-time crowds in the streets. During both day and night, it is advisable to be careful in outlying neighbourhoods like Chorweiler, Porz, Seeberg, Ostheim, Bocklemünd, Ossendorf, and Vingst. In general, avoid getting into fights and stay away from drunk people.
talk
German is of course the language of this city but it is very easy to find information in French and English, also sometimes in Spanish and Japanese. Due to a large number of immigrants, Persian,Turkish, Polish and Russian are also widely spoken. Announcements in the main train station Hauptbahnhof are in German, French and English.
religious services
Holy mass in Catholic churches near to the central station:
Dom
Domkloster 3 next to the central station. (http://www.koelner-dom.de/) Sun: 7:00, 8:00, 9:00, 10:00, 12:00, 17:00, 18:30; Mon-Sat: 6:30, 7:15, 8:00, 9:00, 18:30St. Andreas
Komödienstr. 8. (http://www.sankt-andreas....) Sun: 9:00, 11:00, 18:00; Mon-Fri: 12:05; Sat: 9:00, 17:00St. Mariä Himmelfahrt
Marzellenstr. 26. (http://www.willkommeninko...) Sun: 11:00; Wed, Thu: 10:30; Sat: 17:00, 18:30Minoritenkirche
Kolpingplatz 5. Sun: 9:00, 11:00, 16:00; Tue-Fri: 9:00