It’s Tomorrowland. From right to left, you are facing the building with Cosmic Ray’s on the right end and the walkway to the hub on the left. You can just barely see the curved roof of Flight to the Moon to the left of the castle and above what would later become the Peoplemover track (which was part of the construction of the Tomorrowland entrance, but capped off until the remainder of the PM was built). TL was really empty when WDW opened.