Enjoy a Kölsch in Cologne, a 2,000-year-old city that flanks the Rhine River and is a hub of High Gothic architecture. Kölsch, a super pale ale, is a beer brewed specifically in this city — if it’s brewed elsewhere, it has no business calling itself a Kölsch. Cologne has 13 breweries that produce it, most famously Gaffel and Reissdorf.