This is Gateway Gardens in early January 2021. Gateway Gardens used to be a US housing area north east of Frankfurt International Airport. The housing facilities were able to provide accomodation for approximately 4000 people. The area was handed over to the airport back in 2005. Only three of the original buildings are left. The guard house (entry checkpoint north of the area), one apartment building and the famous building 646, which is not that easy to find.
