SmartGuide turns your phone into a personal tour guide around Boston. Welcome to Boston! The capital and largest city of the U.S state of Massachusetts. People say it’s one of the most unique places in the world. Let’s check it. Whether you are looking for a self-guided tour, audioguide, offline city maps or you just want to know all the best sightseeing spots, fun activities, authentic experiences and hidden gems, SmartGuide is the perfect choice for your Boston travel guide. SELF-GUIDED TOU