To walk or bike Bristol is to truly know it. But the small town feel of Pennsylvania's second-oldest town belies the big thinking going on at the Bridge Business Center. The Center is 300,000 square feet of office, lab, R&D, manufacturing and warehouse space for some of the region's most cutting-edge companies in life sciences, advanced manufacturing and alternative energy and lies in a Keystone Innovation and Enterprise Zone. The multicultural festivals that fill the summer nights down at Waterfront Park are indicative of the borough's ethnic diversity, and the Historic Mill Street Shopping District represents the borough's preservation and entrepreneurial efforts.