This is the main commercial shopping mall in the Boston area. Large crowds throng this covered arcade, nestled between several towers. Occasionally there are art exhibits and cultural events here as well.
If you need a good shopping fix this is one of your must-see sites. The Pru, as it's called, has hundreds of shops nestled at the foot of several towers. It's got the high and middle end shops covered, and is right in the heart of Back Bay
Parking can be expensive, be sure to get it reimbursed with your purchase or restaurant meal.