The Botanical Garden of Prague is impressive - a huge area, a variety of landscapes, beautiful views of the castle of Troy. And the vineyards and distillery of St. Clary. You can walk there endlessly. If you have a whole day, you can combine it with the Zoo and Troy Castle, but in this case you need to understand that the whole botanical garden is not visible. I was in the summer, but it should be beautiful there at any time of the year.→