Castello covers a large vibrant area, with one section bordering St. Mark’s Square and dotted with luxury hotels. Farther from St. Mark's, the neighborhood gets more laid-back, with casual bars where locals stop in for a glass of wine. Shops and eateries catering to all budgets line buzzing Via Garibaldi. In alternating years, the Giardini della Biennale park hosts the Biennale exhibition of contemporary art.