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An Opal Collection Resort

A Storied Retreat on the New Hampshire Seacoast
New Castle, New Hampshire

Relaxing shades of cream and blue welcome guests to tranquil rooms and suites

Each of our elegantly appointed accommodations offer comfortable furnishings and a relaxing retreat from the outside world. Rooms and suites feature sumptuous bathrooms, some with clawfoot tubs that evoke the charm of a bygone era, and a soothing neutral color palette that reflects the beauty of the blue waters surrounding New Castle. Select accommodations offer balconies with water views, fireplaces, and additional living space for family and friends.

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Travel + Leisure World’s Best Awards 2024

Your Voice Shapes the Future of Travel

The best in travel isn’t chosen by a select group of Travel + Leisure staff. It’s decided by individuals – like you – with genuine travel experiences to ensure nominated hotels are recognized solely on merit. If you had an award-winning experience at Wentworth by the Sea, we’d love it if you made your voice heard in the 2024 survey.

Cast Your Vote
Wentworth doors with winter garland

A grand dame of the Gilded Age continues its legacy

Since 1874, Wentworth by the Sea’s iconic facade and towering turrets have welcomed guests to the island of New Castle in Portsmouth, New Hampshire. The nearly 150-year-old retreat has famously hosted presidents and dignitaries, and it continues its tradition today as a serene space for weekend getaways, corporate conferences, and celebrations of all kinds.

Holidays & Resort Activities

Wentworth by the Sea Trio Cheers at Salt

From January 1 through December 31, there is always a reason to celebrate with Wentworth by the Sea. New Year’s, Mother’s Day, Thanksgiving, and everything in between, you will find an array of festive menus, sprawling brunches and buffets, and a host of activities to keep all generations entertained.

It’s time to get your holiday plans locked in. Browse our holiday offerings for the upcoming holidays, and catch a sneak peek of what else we have in store. 

Make the most of your Portsmouth getaway with special vacation deals

Check out the local gems that can’t be missed

Mark the moment with a Wentworth by the Sea event

Wentworth by the Sea has a storied reputation as a gathering place, hosting presidents, political figures, and even the visiting dignitaries who signed the Treaty of Portmsouth to end the Russo-Japanese War in 1905. Mark your own moment, big or small, across more than 14,000 square feet of event space for groups of up to 500.