Julius Eulberg's 20th-century apartment building is in the Prenzlauer Berg neighborhood of Berlin.
Mr. Eulberg, owner of the skin care company Julisis, pays 1,100 euros (about $1,400) a month in rent. Inside, the apartment is chock-full of his collection of porcelain bird figurines. To his left is a one-of-a-kind piece made by Passau.
In Berlin, Space for a Collection - Slide Show - NYTimes.com