Ludwig Roselius was a German coffee merchant and founder of the company Kaffee HAG. He was born in Bremen and is credited with the development of commercial decaffeination of coffee. As a patron, he supported artists like Paula Modersohn-Becker and Bernard Hoetger and turned the Böttcherstrasse street in Bremen into an artwork.

Bremen, officially the City Municipality of Bremen, is the capital of the German state Free Hanseatic City of Bremen, a two-city-state consisting of the cities of Bremen and Bremerhaven. With about 570,000 inhabitants, the Hanseatic city is the 11th largest city of Germany and the second largest city in Northern Germany after Hamburg.