The Newbury Street in Boston is one of the earliest built roads in the city. Previously a part of Boston Harbor, it is over a mile long and stretches across Arlington Street in the east to Brookline Avenue in the west. Not exclusively is Newbury Street known for its historical significance and brownstone design, yet it is also one of the world's most expensive streets. It has some very good quality extravagance boutiques and premium brands like Tiffany's, Chanel, and Cartier. The passageway from Mass Pike has most premium cafés and retail shops, while the prices start to fall as one moves west.