Brink Man works on the landscape at the new downtown park. Urban activist Brad Knoefler has built his own temporary park on the site of the old Miami Arena, which he's leased for two years. The park is meant to spark improvements in the desolate Park West neighborhood, which has virtually nothing in the way of amenities. The park opens Friday at 700 North Miami Avenue. Work is ongoing including watering of newly planted grass and trees to ensure they root properly on Wednesday, January 18, 2012. Al Diaz / Miami Herald Staff

Urban activist Brad Knoefler, left, has built his own temporary park on the site of the old Miami Arena, which he's leased for two years. The park is meant to spark improvements in the desolate Park West neighborhood, which has virtually nothing in the way of amenities. At right is project partner Mark Lesniak The park opens Friday at 700 North Miami Avenue. Work is ongoing including watering of newly planted grass and trees to ensure they root properly on Wednesday, January 18, 2012. Al Diaz / Miami Herald Staff

Urban activist Brad Knoefler, left, has built his own temporary park on the site of the old Miami Arena, which he's leased for two years. The park is meant to spark improvements in the desolate Park West neighborhood, which has virtually nothing in the way of amenities. At right is project partner Mark Lesniak The park opens Friday at 700 North Miami Avenue. Work is ongoing including watering of newly planted grass and trees to ensure they root properly on Wednesday, January 18, 2012. Al Diaz / Miami Herald Staff

Berry Moore adjusts the sprinklers to water new seedlings. Urban activist Brad Knoefler has built his own temporary park on the site of the old Miami Arena, which he's leased for two years. The park is meant to spark improvements in the desolate Park West neighborhood, which has virtually nothing in the way of amenities. The park opens Friday at 700 North Miami Avenue. Work is ongoing including watering of newly planted grass and trees to ensure they root properly on Wednesday, January 18, 2012. Al Diaz / Miami Herald Staff