Frankfurt may be Germany’s Manhattan — or “Mainhattan,” as the locals call it — but this Monday morning in February it’s fairly quiet, free of the constant crush of people that makes the Big Apple hum.

From the 35th floor of the Main Tower, a 600-foot cylinder in the heart of the city, Christof von Dryander has a commanding view of the gently curving Main River. His firm, Cleary Gottlieb Steen & Hamilton, has three floors in the tower, abstract paintings on the wall and the kind of modern furniture that makes readers of Wallpaper weak in the knees.