Le Bal Masqué Official Carnival Dance Party at A-House, Tuesday August 20th @ 9PM-1AM. Provincetown’s A-House paying homage to A-House’s 1975 Bal Masqué party, be sure to mask-up in your sexiest dance disguise and seek out a partner of your choosing to dance the night away in one of our nation’s oldest, and most famous discotheques.