What historical event would you attend if you were able to time travel?

Signing of the Declaration of Independence, and as a woman I would have loved to sign it.

Other than that, watching the carving of the Pieta (the one in the Vatican) by Michelangelo.  I saw it as a child at the World’s Fair in NYC 1964 and later, after it  had been vandalized, in place at St. Peter’s.