What makes our Boston private tours and our Boston small group tours in Boston different is that they’re extremely small—6 people max—and led by credentialed Boston private guides, PhD or MA-level in their respective field. Our favorites? Well, it’s hard to choose, but we really love our Boston’s Big Dig Tour, which looks at the monumental effort to bury a highway beneath the city, one of the most expensive and ambitious public works project in history. We also love our Beacon Hill Tour, which explores the history of Boston Brahmins.