overview opening hours The site of the most beautiful backyard garden in all of Prague–ideal as a rest stop during a walk through Letná Park. Premium coffee, and homemade pastries. If you head there, stop by the coffee museum next door for a look back at the history of coffee from both Czech and international points of view. opening hours january—december mon, tue, wed, thu, fri, sat, sun 13:00—19:30 more about opening hours Source: Cukrárna Alchymista opening hours january—december mon, tue, wed, thu, fri, sat, sun 13:00—19:30