Some of these areas you will pass dozens of times while other visits will need to be planned, but all the following districts and areas of San Francisco are worth visiting:
Union Square is the most important and liveliest square in San Francisco. Here and in the neighboring areas you can find shops, bars, restaurants and a good atmosphere.
The former port of San Francisco, nowadays Fisherman's Wharf is one of the biggest tourist sites of the city. This is where the famous sea lions live.
Yerba Buena Gardens is one of the most important parks in the heart of the city. Around the park you can find plenty of the tourist sites.
The Chinese district of San Francisco holds one of the largest Chinese populations outside of the Asian continent. It is a good place to eat, shop and especially to enjoy its unique atmosphere.
Apart from the Golden Gate Bridge, if there is one image associated with San Francisco, it is the Alamo Square. Its colorful Victorian houses have been used in filming many different movies and series.
Fillmore Street, and more generally Fillmore District is one of the favorite areas for San Francisco residents to live.
Haight-Ashbury is the most alternative and hippy area of San Francisco. In this area you can find a huge number of shops, restaurants and bars with live music.
Although it is not as well known as Chinatown, Japantown is the largest and oldest Japanese district in the United States.
With a more European atmosphere, "Little Italy" is a beautiful area where you can start the evening strolling around and finish off eating at one of the many Italian restaurants there.