Nearly 100 people gathered for the grand opening of Otto Brown Neighborhood Park on a mild Saturday morning, the culmination of two decades of financing, planning and construction. Near the intersection of Northeast 96th Street and Northeast 162nd Avenue in the Heritage neighborhood, the 7.9-acre park cost $1.4 million and features a play structure, picnic tables, open grassy fields, a biking trail, a sport court, a wooded area and a rock feature. Locals and organizers alike expect that it will be well-used and well-loved for years to come. “This is what the Parks Advisory Board hopes for when we open a new park, so many people coming and excited about it,” Kelsey Potter, co-chair of the board, told the crowd.