In the corner of San Fracisco, there is a beautiful museum called the Palace of Fine Arts. It costs money to go inside and see the art. However, that is not why most people visit. The architecture is stunning - a representation of the city of San Fracisco. Outside, you can visit the full extennt of the dome. Its a great place for architectural photography, or even portraits. Its right by a beautiul pond with lush greens to admire.
Right by the Palace, walking distance, there is Crissy Fields. This is a beautiful stretch of beach in which you can see the Golden Gate Bridge, and also mountains in the background.
It can sometimes get crowded, but if you come at the right time, then you can enjoy the beach to yourself.Its a really peaceful place to hang out or even have a picnic.