Possible Clues:

• Place expected to be buzzing with activity
• A - of activity is a busy place
• Place for a buzzer
• Bzzz-y place
• Busy, buzzy place
• Home for a little queen
• Place with a lot of buzz
• With 58-Across, collective consciousness ... or a hint to the ends of 19-, 35- and 52-Across
• Queen's buzzing home
• There's a lot of activity in the queen's residence