Atlantis Banquets & Events – A Waterfront Long Island Wedding Venue in Riverhead, NY

Situated along the Peconic River in downtown Riverhead, Atlantis Banquets & Events is one of the most distinctive Long Island wedding venues, offering elegant waterfront ballrooms, outdoor ceremony spaces, and the added allure of the Long Island Aquarium. Couples can choose from a range of settings to create a wedding that’s classic, modern, or entirely unique.

Event Spaces

• Sea Star Ballroom – A contemporary waterfront ballroom with floor-to-ceiling windows overlooking the marina, a private terrace, and space for up to 650 guests.

• Coliseum Room at the Long Island Aquarium – Celebrate surrounded by coral reefs and tropical fish for a truly unforgettable aquarium wedding experience.

• The Riverside Pavilion – An open-air venue directly on the Peconic River, perfect for outdoor wedding ceremonies and cocktail hours.

All-Inclusive Wedding Packages

Atlantis Banquets & Events offers a variety of all-inclusive wedding packages designed to make planning effortless. Packages feature personalized event coordination, full-service catering, open bar options, custom menus, wedding cake, and décor enhancements. Couples can also take advantage of preferred vendor partnerships for photography, entertainment, and florals.

With convenient on-site lodging at the Hyatt Place Long Island/East End, plus access to rehearsal dinner, welcome party, and post-wedding brunch options, Atlantis Banquets & Events provides a seamless, start-to-finish wedding weekend experience.

Services & Amenities

• Full-service event planning and day-of coordination

• In-house catering and bar service with customizable menus

• Valet parking

• On-site accommodations and first pick for guest room blocks at Hyatt Place

• Exclusive use of your selected event space

Why Couples Choose Atlantis Banquets & Events

• Multiple indoor and outdoor event spaces for ceremonies, receptions, and after-parties

• Exclusive use of your selected venue for privacy and personalized service

• Convenient Riverhead location, minutes from the LIE and at the gateway to the historic Wine Trail on the North Fork and famed Hamptons hot spots on the South Fork.

• Unique photo opportunities, from waterfront views, aquarium habitats, the butterfly garden and more!

Let’s Plan Your Event!

Discover why Atlantis Banquets & Events is one of the most versatile and memorable wedding venues on Long Island.