This is the official card i've received thursday. We can hardly see but this is a view of the Pegasus Fountain at the Luisium Palace's park in Dessau.
"Prince Franz dedicated this small and intimate park to his wife Luise, born Princess of Brandenburg-Schwedt (1750-1811). Classical and Neo-Gothic buildings harmonise with the artistically designed landscape and combine to form an ensemble of exquisite quality." - in: http://www.dessau.de/amt41/kulttour/en/garden_realm/luisium_palace_and_park.html