If you're looking to enjoy oysters and seafood with a view of Boston Harbor, there are several fantastic options to choose from:

1. Legal Harborside: Located at 270 Northern Ave, Legal Harborside offers three floors of dining with stunning views of the harbor. Their menu features a variety of fresh seafood options, including a selection of oysters. You can find more information on their website.
2. Mare Oyster Bar: Situated at 135 Richmond St, Mare Oyster Bar provides a cozy atmosphere and a great view of the harbor. They specialize in seafood, including a wide range of oysters. Check out their website for their menu and more details.
3. The Barking Crab: Located at 88 Sleeper St, The Barking Crab is a casual seafood spot with a lively atmosphere and waterfront views. They serve a variety of seafood dishes, including oysters. Visit their website for more information.

These are just a few examples of restaurants where you can enjoy oysters and seafood while taking in the beautiful view of Boston Harbor. Be sure to check their websites or call ahead for reservations and current offerings.