I went to several baseball games in San Francisco when the Giants played at Candlestick Park. The last game ranks up there as one of the coldest I ever attended, surpassed only by opening day at Yankee Stadium in 2003 (when the seats were covered in ice and snow.)
Now the Giants are playing in their newest home at AT&T Park. The ballpark has changed names several times and has been proclaimed as one of the best parks in baseball by many people I meet. Opened in 2000, AT&T Park is just up the bay, 6 miles north from Candlestick in the South Beach section of San Francisco.