The Horror of Abbadia Mare

By Popular Demand: Friday, November 6th Added!

In October 1929, overshadowed by the collapse of the stock market, the transfer of the castle Abbadia Mare to the shores of America was complete. With it came a horror which brought down one of the most prolific inventors of his time and with him, the House of Hammond. Almost 100 years ago, this closely guarded secret was transcribed by John Hays Hammond, Jr. in the margins of a forbidden book. This October we are prepared to finally tell the story!

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Photograph courtesy of: Designed by pikisuperstar / Freepik

Trick Or Treat At The Castle

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What better place to trick or treat than an old, seaside castle? We have everything you need to ignite your child’s imagination: a drawbridge, a spiral staircase that leads into a Great Hall and even a pool in the middle of the Castle! We’ll have spooky music, but you bring the scary costumes. We’re keeping this very kid-friendly.

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Photo courtesy of: L. Craveiro

We're Open!

We’re Open Daily AND Spiritualism Tours Have Been Extended Through October! 

Just because Summer is over doesn’t mean our season ends. We’re open daily through the end of October and on Fridays, Saturdays and Sundays in November and December! Advance purchase of timed tickets is required to enter the Museum. Purchase your tickets here.

We are really excited to announce that the Thursday Night Spiritualism Tours have been extended for  October! These tours are very popular and sell out fast. Reserve your tickets here! 

Guests are welcome to visit a portion of the Museum grounds without a ticket purchase.  Our iconic arches, look out point and bell tower are all offered at no charge for the community to explore and enjoy during our regular business hours of 10:00 am to 3:00 pm Mondays through Friday and 10:00 am to 4:00 pm on Saturdays and Sundays.

Face masks are required and social distancing should be maintained as recommended by the State of Massachusetts and the City of Gloucester.

About The Museum

Hammond Castle Museum is a unique treasure on the coast of Gloucester, Massachusetts. It was constructed between the years 1926 to 1929, by inventor John Hays Hammond, Jr. to serve as his residence. Its architectural style is that of a medieval castle, and was custom built to encompass his private collection of artifacts spanning from ancient Rome through the Renaissance.

Visitors are welcome to explore the many rooms of the castle with its medieval architecture and artifacts, as well as enjoy the beauty of the castle grounds and view of the Atlantic shore line. In addition, the Museum offers a number of educational programs and prearranged tour opportunities for school and tour groups.

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Photograph courtesy of: Scott Vining

Visiting the Castle

We are dedicated to providing a safe environment for visitors to explore the grounds and numerous rooms within.  To learn more about what you can expect during your visit to the Museum, click here. 

As a non-profit organization, we rely on museum admissions, Museum Shop purchases and donations to support all our efforts.  Here are some ways you can support us:

  • Join Our Membership:  Members have unlimited access to our general exhibits throughout our season. Additional benefits include members-only discounts, access to special programming, and private rentals.
  • Gift Certificates Gift certificates may be used towards your next guided tour through the castle, special events, or purchases in our Museum Shop.
  • Donations: Buttress the Castle’s Walls! One time or monthly donations are a great way to support new programs as well as ongoing restorations!
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Photograph courtesy of: New England Weddings

Weddings and Rentals

Hammond Castle Museum offers the most romantic seaside setting for your special day. Say “I DO” in the expanse of our Great Hall or embrace while perfectly framed by our iconic arches with sweeping views of Gloucester Harbor.

Our new Petite Weddings offer you the opportunity to host an intimate wedding ceremony. You and your closest family and friends will have exclusive access to the Museum, ocean lawn and gardens for your ceremony and photography.  For more information and availability, please call 978-283-2080 or you may reach us at


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Photograph courtesy of: Troublemaker Photography

Corporate Functions

Corporate rentals, such as award dinners, clambakes, and small meetings are excellent ways the Hammond’s home continues the tradition established over the years when notable celebrities, scientists, musicians and world leaders met here to enjoy the Hammond experience.

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