The 18-story, $25 million project will be at 3718 Henry Hudson Parkway at West 239th Street, a site now marked only by a plywood fence.
Instead, they screwed the pictures to the site's blue plywood fence, just down from the building permits.
There is a plywood fence around the Victorian conservatory at the New York Botanical Garden and the big glass rooms are being emptied of plants.
Sidewalk space, sometimes shared by Chinese calligraphers, shrank when the plywood fence went up around the lot last January.
"You can't tell me that the 6-foot plywood fence they are going to put up around the construction site is going to block the sound," she said.
A construction shed has been erected over the sidewalks adjacent to the site along with a plywood fence to separate passers-by from the demolition.
A trash bin is perched awkwardly in the yard, siding has been stripped away, and the stone wall around parts of the property is now topped with a tall plywood fence.
Earlier in the day, demonstrators began climbing the plywood fence around a construction site near Sixth Avenue and Canal Street.
Behind a blue plywood fence, in the hole where the brownstones once stood, a red bulldozer sits.
Also like Woodstock, it became an "open event" when the promoter threw open the gates after crowds outside began to tear down the plywood fence that had been erected around the site.