Representing the best in Boston's traditional architecture, this relatively new center is a classic restoration of the first large scale building in the Back Bay district. State capital Boston is one of the top financial cities in the US, with the country's sixth largest economy. A 2008 study ranked it in the top 10 cities in the world for a career in finance. It also has several technology companies and is one of the country's top life sciences clusters. Tourism and conventions play a vital role, and the city's colleges and universities also contribute greatly to the regional economy. Major companies have chosen Boston for their headquarters including Liberty Mutual, Gillette and New Balance. The city is also a center for printing and publishing with Houghton Mifflin headquartered here and Pearson employing several hundred people.