Aerocity is an imagination of urban interactive terminals, where the airport becomes an extension of the city and the city becomes part of the airport. The thesis focuses on the interface where infrastructure meets the urban fabric. Guided by an outlook of future technology, the thesis challenges the hard boundary of airport security line and its reflection in the city and the architecture. Instead of utilizing airport as a new town strategy towards the Aerotropolis model, Aerocity focuses on the revitalization of exiting fabric. Through a series of urban planning strategies, the thesis searches for the realm where industries, commerce, and people can coherently reside along the infrastructure. Aerocity foregrounds the transition between different cities and celebrates the seam line of air traveling. Through the juxtaposition of the old and new, the thesis proposes a new regional airport typology where its cultural identity is constructed through its context.