"Up and down a hill"
Parnassus Avenue is all a hill, starting at Judah Street Parnassus Avenue goes uphill and through the heart of UCSF. As Judah Street transitions into Parnassus Avenue, you can see a great view of the Sunset District. Although it may not be much, it is still a spectacular view. But Parnassus Avenue starts to go on a downhill slope once you pass the UCSF campus. There are also MUNI stops every block (if not every other block). The street is usually busy, but only during the day because of students and alike, since it is also a university, as well as a hospital, clinic, etc. all combined into one campus. There are a few places to eat here, but mainly the indoor food court that serves mostly fast food type meals.