Hartford is full of American History and art museums like the Wadsworth Atheneum (known for being the first public art museum in the States), Mark Twain House, and Harriet Beecher Stowe House. Also, as the the nation's first public park, Bushnell Park is full of attractions and is located next to the State Capitol Building.
For useful airport information, such as ground transportation and parking, visit Bradley International Airport's official site.