The climate change-themed 18 holes mini-golf course PUTTING GREEN has opened to the public as a new interim use at the River Ring site along the North Williamsburg waterfront. It is open seven days a week, Monday to Wednesday 12 to 8 pm and Thursday to Sunday 10 am to 8 pm. Adults pay $5 to $10 and kids $2 to $5 to enter which will be donated to local nonprofits. Take the East River Ferry from DUMBO to the North Williamsburg stop.