Renovations in the 1940s and 1950s include a restoration of the Harlem Meer completed in 1943,[179] and a new boathouse completed in 1954.[180][181][182] Moses began construction on several other recreational features in Central Park, such as playgrounds and ball fields.[183] One of the more controversial projects proposed during this time was a 1956 dispute over a parking lot for Tavern in the Green. The controversy placed Moses, an urban planner known for displacing families for other large projects around the city, against a group of mothers who frequented a wooded hollow at the site of a parking lot.[183][184] Though opposed by the parents, Moses approved the destruction of part of the hollow. Demolition work commenced after Central Park was closed for the night and was only halted after the threat of a lawsuit.[183][185]