9. Boston, Massachusetts
3/11
Photo: Boston skyline viewed from harbor, cityscape of the Massachusetts capital, USA (photo via RSfotography / iStock / Getty Images Plus)
As the weather warms up across the Northeast, many are planning a start-of-summer getaway to Boston to explore the city's top sites, such as the 2.5-mile-long Freedom Trail and iconic Fenway Park, home of the beloved Boston Red Sox, which will be in town for a five-game series Memorial Day Weekend.