San Francisco from the edge of space, appears as if moored to the Bay cities by the Golden Gate and Bay Bridges, while the snowy domes of the Sierra Nevada from Donner Pass, Lake Tahoe and Yosemite to the White Mountains and Mount Whitney, outline the curvature of the Earth. (See from an altitude of 20 km (65,000 feet) by a U-2 pilot from NASA Ames Research Center).
Note: I’ll make a better copy tomorrow