Built for business. Set apart by the waterfront.
Castleton Banquet & Conference Center has hosted business events on Cobbetts Pond for more than 35 years.
From executive meetings and training days to conferences, trade shows, company parties, and large corporate celebrations, our versatile spaces can accommodate groups ranging from approximately 35 to 800 guests, depending on the event format.
Located in Windham, New Hampshire, Castleton combines flexible event spaces, in-house catering, high-speed Wi-Fi, presentation resources, ample on-site parking, and experienced event support with a waterfront setting that feels like somewhere special.

No two corporate events require the same setup.
A 35-person board meeting should feel private and focused. A large company celebration may need room for dinner, presentations, entertainment, and dancing. A full-day conference may require separate spaces for general sessions, breakout discussions, meals, registration, and networking.
Castleton’s flexible banquet hall can be divided into two, three, or four rooms using air walls, allowing our team to create a layout around your attendance and agenda.
The full ballroom can also be opened for large conferences, celebrations, trade shows, and other open-format events.
Depending on the setup, Castleton can accommodate groups ranging from approximately 35 to 800 guests.

Castleton provides a professional setting for conferences, executive meetings, board retreats, training sessions, seminars, professional-development programs, and company-wide meetings.
The ballroom can be arranged for presentations, classroom-style seating, table work, group discussions, or a combination of activities.
When multiple spaces are needed, air walls allow the banquet hall to be separated into smaller rooms for breakout sessions, leadership meetings, registration, meals, or concurrent programs.
Available presentation resources include:
For additional audiovisual equipment, staging, lighting, or production needs, Castleton can connect you with experienced providers through our Preferred Vendors.

Castleton’s flexible ballroom can support trade shows, vendor fairs, business expos, recruiting events, and professional networking programs.
Depending on the event layout, Castleton can accommodate:
Electrical access is available, although power does not automatically extend to every booth. Electrical needs should be discussed during planning so the appropriate access can be arranged.
Standard vendor access is generally available approximately two hours before an event. Earlier access may be discussed based on your event requirements and venue availability.

Many corporate venues compete on meeting-room square footage and equipment lists.
Castleton offers something many traditional conference spaces cannot replicate: a corporate event overlooking Cobbetts Pond.
Attendees can step outside between sessions, gather for cocktails near the water, take team photographs surrounded by natural scenery, or enjoy dinner in a setting connected to the waterfront.
It gives your employees and guests a change of environment without requiring them to travel hours from the office.
Castleton is conveniently located in Windham, New Hampshire, near Salem, Manchester, Nashua, northern Massachusetts, and the greater Boston area.
A full-day event may need more than one room configuration.
Castleton’s banquet hall can be separated into two, three, or four rooms using movable air walls.
Depending on your event, separate spaces may be used for:
Our team will work with you to understand your agenda, attendance, presentation requirements, catering schedule, and attendee flow before recommending a room layout.
When the agenda changes, the room should be able to adapt with it.
Catering is handled by Castleton’s in-house culinary team, helping simplify planning and keep your event coordinated through one experienced venue.
Our culinary and event teams work together to coordinate the room, timeline, meeting breaks, and meal service.
Corporate catering options may include:
Coffee, beverages, light refreshments, and scheduled breaks for conferences, seminars, meetings, and training sessions.
Convenient options for meetings and programs where the agenda needs to keep moving.
A flexible choice for conferences, company parties, employee events, holiday celebrations, and larger gatherings.
A more formal dining experience for awards ceremonies, appreciation dinners, galas, holiday parties, and company celebrations.
A successful corporate event is built on the details your guests notice—and the ones they never have to think about.
Castleton’s Event Coordinators help plan the room configuration, catering, event timeline, presentation needs, guest flow, and other important details.
On the day of the event, a Banquet Captain serves as a point of contact and helps keep the room, service, catering, and event timeline running smoothly.
Our team can help coordinate:
From the first conversation through the final event details, you will have a clear point of contact helping keep the planning moving.
Thoughtfully planned. Seamlessly coordinated. Designed to leave a lasting impression.
The right venue should support your agenda, fit your attendance, and give your guests an experience worth leaving the office for.
Tell us about your event, estimated attendance, preferred date, and what you need the space to accomplish.
Our team will help you explore available rooms, breakout configurations, catering options, presentation resources, parking needs, and next steps.
58 Enterprise Drive,
Windham, NH 03087
Monday – Friday
9am – 4pm
Saturday & Sunday
By Appointment Only
Get started with planning your dream wedding or social event