Didier Faustino's swingset billboard

Architect Didier Faustino's Double Happiness, an "urban reanimation device" installed as part of the Shenzhen-Hong Kong Bi-City Biennial of Urbanism and Architecture:

Double Happiness responds to the society of materialism where individual desires seem to be prevailing over all. This nomad piece of urban furniture allows the reactivation of different public spaces and enables inhabitants to reappropriate fragments of their city. They will both escape and dominate public space through a game of equilibrium and desequilibrium. By playing this “risky” game, and testing their own limits, two persons can experience together a new perception of space and recover an awareness of the physical world.

Via PlaceboKatz.