The Presidency was built in the mid 1950s as part of the ‘Largo’ complex according to designs by architect Tsolov. Today the Bulgarian president has his official chambers here facing the archaeological museum and his rather smart guard of honour has been photographed by many a tourist.The guards change every hour, 5 minutes before the full hour but if you want the full pomp and ceremony be here on the first Wednesday of the month at 12:00 when you can see the official changing of the guards complete with music, shouting and weapon brandishing.