Summertime visitors to Prague often complain about the lack of modern air conditioning. Sure, the nicer hotels and restaurants are equipped to battle the heat, but budget accommodations, taxis, trains, trams, and most businesses and cafes are strangely devoid of Freon. Luckily, the city is teeming with splendid open air spots (largely free) for "Praguers" and tourists to kick back and relax in the shade.
1). Slavic Island. This first suggestion is best enjoyed on a workday lunch hour or weekend morning, as it is relatively small. This pretty little island is situated right in the heart of the city across the street from the National Theatre. Paddle boats are available for rent and during high traffic hours there are often vendors selling food and treats.