Düsseldorf

Düsseldorf is generally as safe as other European cities of similar size. However the surroundings of the central railway station can be a bit intimidating especially at night due to the presence of junkies.

religious services

Holy mass in catholic churches in downtown Düsseldorf:

Franziskanerkirche
Immermannstraße/Oststraße near the central station. (http://www.franziskaner-d...). Su: 10AM, 12PM; M-F: 3:30PM.
St. Maximilian
Schulstraße/Maxplatz Altstadt. (http://www.maxkirche.de/). Su: 10AM, 11:30AM, 6PM; M-Sa: 6PM.
St. Andreas
Hunsrückenstraße near to the Kunsthalle, Altstadt. (http://www.dominikaner-du...) Sun: 8:30, 11:00, 18:00; Mon-Sat: 12:00, 18:00 except Fri
St. Lambertus
Basilika minor, Stiftsplatz near the Rhine bank, Altstadt. (http://www.lambertuskirche.de/) Sun: 10:30AM, 5PM; Mo-Sa: 5PM.

Index of churches of all Christian denominations in Düsseldorf: (http://www.ekir.de/duesse...).

Jüdische Gemeinde Düsseldorf

Chabad of Düsseldorf Jewish Synagogue and Center that holds weekly Sabbath services as well as other events.

respect

Düsseldorf is in a strong rivalry with its neighbor city Cologne, especially concerning comparisons between the local beers. Cologne is almost twice the size of Düsseldorf in terms of population, and the Cologne Cathedral is known nationwide. Düsseldorf is an economic powerhouse and capital city of the state of NRW. If you have been to Cologne, try to avoid any comparisons between the two cities.

spelling

In German, umlauts like ü can be transcribed as ue, so the correct spelling when no umlauts are available would be Duesseldorf. While normally, incorrectly replacing an umlaut with a single vowel will simply give a nonsense word, this is not the case for Düsseldorf. In fact, "Dussel" is a dated word meaning "fool", and "dorf" means "village", so "Dusseldorf" actually means "village of fools".