Concierge.com's insider take:
The shopping street to end all shopping streets, Newbury's eight-block span (approximately one mile) is home to some 73 clothing boutiques, 40 art galleries, 30 day spas, and 30 restaurants. Some names are familiar, from Valentino and Cartier to H&M and American Eagle, though others are native to Beantown. Tess & Carlos (no. 141A; 617-262-8377; www.tessandcarlos.com), Dress (no. 221; 617-424-7125; www.dressboston.com), and Matsu (no. 259; 617-266-9707; www.matsuboston.com) all carry big-ticket items by high-profile designers; and Trident Booksellers & Cafe is a nice antidote to the big-box sellers (no. 338; 617-267-8688; www.tridentbookscafe.com).