Potrero Hill is also the home of many famous companies. The Anchor Brewing Company operates a brewery and distillery. It is one of the last remaining breweries to produce California Common beer, also known as "Steam Beer", a trademark owned by the company. Located on Mariposa Street, between Carolina and DeHaro Streets, the building was previously owned by the washing machine heir Fritz Maytag. Anchor Brewery offers paid tours on weekdays with free beer tasting. It is recommended to book the tour months in advance. SEGA of America, the American publishing arm for one-time gaming giant SEGA, once operated out of an office on Rhode Island St.