Directions to the Ball
Pasadena Masonic Hall
200 S. Euclid
(Corner of Euclid and Corodova)
The most reliable parking is the Sheraton/Convention Center lot on the West side of Euclid St. It is open all night.
There are other lots, and some street parking available, but read signs carefully and be sure, if you park in a structure, to confirm that they will be open late enough. You don't want your car to be locked in overnight (it has happened - especially in the Structure at the Southeast corner of Euclid and Cordova.