This under-used (but we like it that way) treasure is the perfect waterfront park: wide stretch of green lawn, nice patch of white-sand beach, pretty but not overbearing homes across the street and a view of the St. Pete skyline in the distance. There’s a mellow vibe here that extends even to the Fourth of July, when carloads come to watch the fireworks over the bay. Though the big finale fizzled out at this year’s display, the crowd remained quiet and unruffled — perfectly happy to continue lazing around Lassing. Beach Drive S.E. between 15th and 22nd avenues S.E., St. Petersburg.