A friend recently introduced me to the gorgeous work of Royal De Luxe, a street performance troupe famous for their giant mechanical marionettes. This troupe came together in 1979 in Aix-en-Provence, led by Jean-Luc Courcoult. Now based out of Nantes, France, the group tours around the world, focusing on bringing shows to each city that adapts and becomes a part of the city itself as the performers and puppets walk through the streets in the presence of thousands who come outside to see the spectacle. Their shows sometimes parade around for days. They've done surprise shows as well as those that were approved and announced in advance. This dedication to bringing art and performance to public spheres, rather than locking it away in a conventional venue, is absolutely inspiring to me, as is the craftsmanship and coordination of the giants themselves.
Here is a video of their performance of "The Sultan's Elephant" in London in 2006: