Robert - what a fantastic aerial photograph. Was that taken the day the hot balloons were at Tsarskoe Selo?
The Arsenal was designed by Adam Menelaws. It stands at the very heart of the Alexander Park, earlier site of Mon Bijou.
Much of Nicholas I's superb armoury (much of it Persian of origin) is now in the Catherine Palace. There have been discussions, for a few years, of restoring the Arsenal and combining the armour and weapons currently in the Hermitage Museum with those from the Catherine Palace.
tsaria