I asked the question: 'What draws people to public places?' and searched for answers.
 

Corridart: Art in the street, space of opportunity for artists.
                Organised by architect-artist Charney for 1976 Montreal Olympiad
                Along 5.5 miles of Sherbrooke Street.

Crystal Palace: Wonder, curiosity, discovery, randomness.
                        Estrangement: 'encounter sufficient otherness to recognize strangeness in oneself'  (ai, winter/spring 2000)

Vito Acconci:    His installments attract passerby's as opposed to just museum-goers.
                        Absence of hierarchy makes the space more flexible. (Architecture, January 2001).

Movable Chairs in the Jardin de Luxembourg, Bryant Park, New York.

Childhood Memory: Polish story book about a boy who retreats under an umbrella-like pear tree. The pears provided him with sustenance and a sweet smell. The tree's branches provided shelter and privacy. Light sparkled through the leaves of the tree.
Even adults  hunger for such a safe, secluded, calming spot. Can discovery happen more than once? Does the space need to change to maintain its magic?

La Fontaine Medici:  Calm, shady oassis in the Jardin de Luxembourg. Never loses its charm.