The Mesa Convention Center is the premier meeting venue in the East Valley with 38,000+ sq ft of flexible indoor space and 50,000 sq ft of beautiful outdoor spaces. Our state-of-the-art theater and meeting rooms are ideal meetings and conventions. The Mesa Convention Center is the first IBCCES-Autism Certified (meeting) Center in the Valley. The adjacent Mesa Amphitheater is perfect for outdoor special events, receptions, banquets or concerts, and seats up to 4,200ppl theater style or 770ppl in banquet rounds. The Post is a historic venue in downtown Mesa that served as Mesa's first post office. The newly renovated structure has over 5,000 sq ft of event space that can be divided into two rooms. The versatile space is ideal for social event, meetings, banquets, & corporate events.