Two masks often used on maps to indicate a theatre, these originate in Greek Theatre as masks of tragedy and comedy.
One mask frowns, the other smiles.
Performing Arts was approved as part of Unicode 6.0 in 2010 and added to Emoji 1.0 in 2015.
🎭 Drama Masks
🎭 Greek Theatre Masks
🎭 Theatre Logo
🎭 Tragedy and Comedy Masks