Summer is almost over, but Walnut Wednesday remains one of the season's great traditions. Today, it continues from 11 a.m. to 1:30 p.m. at Perk Plaza at Chester Commons — at East 12th and Walnut streets — as food trucks gather to serve up lunch to area residents and employees. Check out the Downtown Cleveland Alliance website for weekly updates on vendors, entertainment offerings and more. But hurry: today is the last Walnut Wednesday this year. Admission is free, but the food will cost you. (Niesel) downtowncleveland.com.