Insanely Steep Hills Go without saying, curvy hill street. click pic to read more

	There are hills so steep in San Francisco that the roads are designed to be curvy so that you don't fly off them into the air. There are other steep streets where the sidewalks have staircases built directly into them. It's kind of rad.
	There are many anomalous hills in San Francisco. Some can be very large yet still green and grassy.