Frank Lloyd Wright (1869-1959)

Wright represented organic 
architecture  and postulated
the view of a building as
 an organism.
Some designs are reminiscent 
of skeletons  of marine organisms 

or spiders' webs. 
In the New York Guggenheim Museum, built 1946-1959, he applied the spiral to the main circulation space of the exhibition hall. 
This was a controversial concept until today, but the resulting space is impressive.
The prominent site bordering the Central Park enhances the impression. 
Wright also used the spiral as a circulation ramp in smaller projects, like the Morris house in San Francisco, which was built 1948-1949.

Guggenheim Museum

                                              Morris house