Enter this location at 425 Summer St. This is the Westin Seaport District Hotel Self-Park Garage, operated by Pilgrim Parking Inc. It is located on the west side of Summer St. between East Side Dr. and D St. The garage is underneath the Westin Seaport District Hotel, and next to the Boston Convention and Exhibition Center. Follow the circle drive at the front of the hotel until you reach the parking garage ramp, which is marked by a blue 'P' sign with white lettering.