Legion of Honor
Overlooking the iconic Golden Gate Bridge in Lincoln Park, the Legion of Honor is San Francisco's most beautiful museum. See a collection spanning 4,000 years of ancient and European art, plus mummies, sculptures, and Rodin's The Thinker in an incredible setting.
If you're taking public transport, the #18 bus goes directly to the Legion of Honor.
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I highly recommend the Legion's cafe. Above average food in a pleasant atmosphere.