Leave South Boston around 8:00 AM via Route 3 south toward Plymouth, allowing roughly 45 minutes in light traffic and closer to an hour during weekday congestion. Continue to Plymouth Rock on the waterfront, where street and garage parking are available around the harbor; budget about $2–$4 per hour, depending on the lot. The rock itself is a quick 30-minute stop, best enjoyed with a short walk along Water Street and the harbor before tour crowds build. Admission to the enclosure is generally free, though nearby parking and seasonal operating details can vary.
Continue a few minutes by car to Plimoth Patuxet Museums for approximately two hours. The site is spread across several areas, so wear comfortable shoes and expect outdoor walking; regular adult admission is commonly in the $30–$40 range, with hours typically beginning around 9:00 or 9:30 AM in September. Afterward, follow Route 3 toward the Cape Cod Canal, stopping for lunch wherever is convenient along the route rather than trying to squeeze in a formal waterfront reservation.
Spend about an hour on the Cape Cod Canal Bikeway, walking or renting bicycles if available, with the most pleasant stretch running beside the water through Bourne and Sandwich. Then visit the Cape Cod Canal Visitor Center, where exhibits explain the canal’s construction and operation; allow roughly 45 minutes and check the seasonal closing time before setting out, as September hours can be shorter than summer hours. Keep an eye out for fishing boats and commercial vessels passing through—the canal is often more interesting in motion than on a quiet day.
Finish with the planned stop at the Rubber Duck Store, allowing 30–45 minutes for browsing and purchases, then drive to your Cape Cod lodging and have dinner nearby. A relaxed seafood choice is Seafood Shanty in West Dennis, while The Lobster Pot in Provincetown is a good option if your lodging is farther north; expect approximately $25–$45 per person before drinks and tip. Because the day involves several outdoor stops and potentially 2½–3 hours of total driving from Boston, avoid pushing farther onto the Cape than your lodging requires, and confirm the store and restaurant’s September 22 hours before leaving Plymouth.
Start at Boston Common by 9:45 AM for the 10:00 AM Freedom Trail walking tour. The four-hour route is best taken at an unhurried pace, with time for the guide’s stories and the historic streets around Beacon Hill, Downtown Crossing, and the North End. Wear comfortable shoes—the trail is roughly 2.5 miles, much of it on brick or uneven pavement—and bring water. The common itself is open around the clock, while tour prices vary by operator, usually about $20–$35 per adult. After the tour, walk toward Quincy Market for lunch; the market’s food stalls make it easy for everyone to choose something different, with most meals costing approximately $15–$30. It can be crowded around noon, so head inside as soon as the tour ends and expect about an hour here.
From Quincy Market, take the Orange Line from Haymarket toward Community College, or use a rideshare for the simplest 10–15-minute transfer to the Charlestown Navy Yard. Allow roughly 1.5 hours at the USS Constitution Museum, which explains the ship’s construction, crew, and naval history through hands-on exhibits; check the museum’s September hours and admission prices before leaving, as schedules can vary. Then board the USS Constitution itself when access is available, allowing about 45 minutes. Entry is free, but visitors should bring government-issued photo identification for the security check, and boarding can be limited by weather or Navy Yard operating procedures. Finish with dinner at Brewer’s Fork in Charlestown, a relaxed neighborhood restaurant known for wood-fired food and local beer; budget about $25–$45 per person and consider reserving ahead for a weekday evening.
Take the MBTA Newburyport/Rockport Line from North Station to Salem, a trip of about 30 minutes. Aim for the 8:00 AM departure so you arrive with time for coffee and the walk into downtown; trains are straightforward, but check the weekday schedule in the mTicket app that morning. Begin at the Salem Witch Museum, where the approximately one-hour presentation gives useful context for the 1692 witch trials before you explore the city independently. Admission is generally around $17–$20, and timed entry may be used, so booking ahead is sensible in September.
From there, walk roughly 15 minutes east toward Salem Harbor and The House of the Seven Gables. Allow about 1½ hours for the historic house and grounds, including the waterfront setting and literary connections to Nathaniel Hawthorne. The site typically opens around 10:00 AM; wear shoes suitable for stairs and uneven paths. Continue back toward central Salem for lunch at Salem Public Market, an easygoing vendor hall where you can choose something casual for approximately $15–$30 per person. It is a good place to keep the meal flexible rather than committing to a long restaurant service.
After lunch, walk a few blocks to the Peabody Essex Museum for 1½–2 hours of American, maritime, and global art. The museum is large enough to reward a focused visit, so prioritize the exhibitions that interest you rather than trying to cover every gallery; admission is commonly in the $20–$25 range, with current hours and reservations worth checking in advance. Leave Salem around 1:00 PM for Boston Logan International Airport. By car, use MA-1A or Route 1 toward the airport, allowing roughly 45–75 minutes for traffic, rental-car return, and terminal logistics. For a 4:00 PM deadline, do not linger after the museum: build in extra time for the airport loop and security, particularly during an afternoon weekday departure.