Kick off your late morning at the vibrant [Assembly Row](https://www.assemblyrow.com), where you can browse the pet-friendly shops before heading into the [LEGOLAND Discovery Center Boston](https://www.legolanddiscoverycenter.com/boston/) for a world of creative building and interactive rides. Afterward, take a short walk to Sylvester Baxter Riverside Park to let your dog stretch its legs along the scenic riverfront paths.
Head over to the historic [Charlestown Navy Yard](https://www.nps.gov/bost/learn/historyculture/cny.htm) to view the majestic [USS Constitution](https://www.google.com/search?q=USS+Constitution+Boston+Lego+land%2C+3+days+family+of+4+and+dog%0A+official+site) before taking a scenic walk up to the [Bunker Hill Monument](https://www.nps.gov/bost/learn/historyculture/bhm.htm), where the kids can learn about history while your dog enjoys the surrounding parkland. Wrap up your afternoon by grabbing a warm drink at the pet-friendly Zume's Coffee House and taking a leisurely stroll along the Charlestown Waterfront Park to catch views of the city skyline across the water.
As the sun sets, head to the vibrant [Bow Market](https://www.bowmarketsomerville.com) in Union Square, where the family can choose from a variety of food stalls and enjoy dinner in the pet-friendly, heated courtyard. Finish your first evening with a short walk up to the Prospect Hill Monument to take in a stunning panoramic view of the twinkling Boston Skyline before retreating for the night.
Begin your morning at the historic Boston Common, where the kids can enjoy the frosty views of the [Frog Pond](https://bostonfrogpond.com/) while your dog explores the winding paths of this iconic city center. After letting your pet stretch its legs, wander into the adjacent Boston Public Garden to see the famous Make Way for Ducklings Statues and cross the charming Victorian Suspension Bridge for a classic New England photo opportunity.
Stroll along the scenic [Boston Harborwalk](https://www.bostonharborwalk.org) toward the [Seaport District](https://www.bostonseaport.xyz), making a stop at the timber-framed playground of [Martin's Park](https://www.martinsparkboston.org) where the kids can climb while your dog enjoys the harbor breeze. Afterward, dive into the winter charm of [Snowport](https://www.bostonseaport.xyz/snowport/) to browse the local maker stalls and play interactive outdoor games, then capture a family photo beside the giant, historic Hood Milk Bottle.
As night falls, settle in for dinner at the pet-friendly outdoor seating of [Cisco Brewers Seaport](https://www.google.com/search?q=Cisco+Brewers+Seaport+Boston+Lego+land%2C+3+days+family+of+4+and+dog%0A+official+site) to enjoy a lively atmosphere and local brews. Afterward, take a short stroll to Fan Pier Park to admire the glittering reflections of the skyline on the water before ending your night under the iconic illuminated blue arches of Christopher Columbus Waterfront Park.
Begin your final morning wandering the charming cobblestone streets of the North End, stopping by [Mike's Pastry](https://www.mikespastry.com) for some world-famous treats to enjoy on the go. Afterward, make your way to the Paul Revere Mall to admire the Paul Revere Statue and the historic facade of the [Old North Church](https://www.oldnorth.com), where the open outdoor plaza offers a perfect spot for your dog to stretch their legs.
Continue your adventure along the [Rose Kennedy Greenway](https://www.rosekennedygreenway.org), a vibrant linear park where the kids can marvel at the unique hand-carved creatures on the [Greenway Carousel](https://www.rosekennedygreenway.org/visit/carousel/). Afterward, take a brisk walk toward Long Wharf to see the bustling harbor activity before relaxing at the pet-friendly Post Office Square, an urban oasis perfect for a family break.
Conclude your journey at the historic [Faneuil Hall Marketplace](https://faneuilhallmarketplace.com), admiring the evening lights and the towering presence of the Custom House Tower as the city winds down. End your final night with a peaceful stroll through the grand illuminated arch at Rowes Wharf, capturing a few last photos of the snowy harbor before heading home with your family and furry friend.