According to a guide book, this building - the Clam-Gallas Palace - located in the centre of Prague's Old Town, dates back to approximately 1714. The portal of this door, by Matthias Bernard Braun, shows four giant statues of Hercules straining to support the weight of this massive Baroque portal. There are, in fact, two very similar looking portals/doors to this palace and they are about 50m apart.
This particular door is the one which acts as the entrance to the City of Prague's Archives.
The portal is magnificent and the door itself is big and strong, but I must say I am a bit disappointed by the door 'accessories'...the handles and the other ornament are more recent additions. Also, from what I have seen in my door hunting around town, this metal - which is some sort of aluminium mix - seems to be more and more common on doors like this. You may remember seeing them on doors in my earlier posts. I find their design and feel has nothing to do with the rest of the door and that it is a shame that they have found their way to such a nice door.