San Francisco Hills
According to the city archivist, San Francisco has 42 hills ranging upward from 200 to 938 feet.
But for those whose favorite sport is scaring friends from the flatlands, only five really count.
The city's 10 steepest through streets (open to vehicles) are conveniently confined to Russian and Nob Hills and Pacific, Dolores and Buena Vista Heights.
Most of these eccentric arteries are marked at the point where they vanish into space with yellow "Hill" or "Grade" signs.
What this means is "Don't try it unless you've had your brakes checked recently."
Here, according to the city Bureau of Engineering, are the steepest of the steep in descending order:
1. & 2.
Filbert between Leavenworth and Hyde;
22nd Street between Church and Vicksburg, both 31.5 percent gradient.
Jones between Union and Filbert, 29 percent.
4. Duboce between Buena Vista and Alpine, 27.9 percent.
5. & 6.
Jones between Green and Union; Webster between Vallejo and Broadway, both 26 percent.
7. & 8.
Duboce between Divisadero and Alpine; Duboce between Castro and Divisadero, both 25 percent.
Jones between Pine and California, 24.8 percent.
Fillmore between Vallejo and Broadway, 24 percent.
May be San Francisco's most photographed street.
The 'crooky' portion starts at Hyde Street and you can look downhill or, what is much better, go to the end at Leavenworth Street.
The Cable Car stops at Hyde Street / Lombard Street. Enjoy the view over the bay or Ghirardelli Square and Alcatraz.