A historic downtown Oakland office tower that's described as the East Bay city's "original highrise" has been returned to its lender, fresh evidence of the worsening weakness in the Bay Area office market.
Key System was the Bay Area s original BART, and then it vanished sfgate.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from sfgate.com Daily Mail and Mail on Sunday newspapers.