Castle Airport (MER)

Castle Airport (MER) is a significant aviation and business park located in Atwater, California, on the site of the former Castle Air Force Base. The terminal is a modern, single-story facility that primarily supports general aviation, large-scale corporate charters, and government flight operations. Its expansive design reflects the airfield's history as a major Strategic Air Command base, now repurposed to serve as a premier base for private, industrial, and specialized aviation in the San Joaquin Valley. The terminal experience at Castle is professional and efficient, featuring spacious pilot and passenger lounges, modern flight planning rooms, and a range of meeting facilities designed for corporate and industrial clients. The layout is optimized for the handling of large aircraft, with immediate access to massive apron areas and hangar facilities that are among the most extensive in central California. Security and administrative services are managed with a focus on high-end executive travel and specialized logistical operations, including pilot training and aircraft maintenance. Amenities within the MER terminal include high-quality cafes and comfortable waiting areas that provide a professional environment for travelers in transit. While the airfield does not offer extensive commercial retail, its location within the Castle Commerce Center provides convenient access to a wide range of local businesses, industrial services, and the Castle Air Museum located on-site. Ground transport is readily available, with dedicated taxi services and car rental agencies providing reliable connections to the center of Merced, Atwater, and the various commercial hubs across the valley.