I finally became a pure tourist in the last day of my California conference trip. Although having transferred flights at San Francisco for quite a few times, this is actually the first time I stepped out of the airport and paid a visit to the city. Golden Gate Bridge is for sure, one of the must-visit sites. There are two things that you can always be impressed by California, the nice weather, and the beautiful flowers. And luckily I got both when I visited Golden Gate Bridge!