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Originally known as The Manor in 1910, this 55-acre estate of John Teele and Ruth Baker Pratt was considered by Country Life Magazine as one of the "Best 12 Country Houses in America”. Designed by the noted architect Charles Adams Platt (1861-1933), the brick Georgian mansion set in pastoral surroundings was an integral part of the many glamorous estates that once comprised Long Island's Gold Coast.

The mansion's architectural style reflects the grandeur of the era, featuring a stunning Georgian Revival design with intricate detailing, sprawling gardens, and breathtaking views of Long Island Sound. The estate quickly became a social hub for the Pratt family, hosting lavish parties and gatherings attended by the elite of New York society.

Mrs. Ruth Baker Pratt and her family maintained the estate until her death in 1965. In 1985, “The Manor” became The Harrison House, which was one of the very first conference center hotels in the United States in 1985.

In 2019, the mansion underwent a meticulous restoration and renovation, transforming it into the luxurious event venue and hotel known today as "The Mansion at Glen Cove." Preserving its historic charm while incorporating modern amenities, the mansion offers guests an unparalleled blend of old-world elegance and contemporary comfort.

1920

Originally known as The Manor, The Mansion at Glen Cove features a stately two-story portico entrance, an elegant, baronial double staircase, imported paneling, and antique fixtures that evoke the grandeur of a bygone era. The Georgian brick mansion, set amidst idyllic surroundings, is one of several glamorous estates that once comprised Long Island’s famed Gold Coast, famously depicted in F. Scott Fitzgerald’s iconic novel, The Great Gatsby.

1925

The Great Gatsby is published. Written by American author F. Scott Fitzgerald, it follows a cast of characters living in the fictional town of West Egg on Long Island’s Gold Coast in the summer of 1922.

1929

Ruth Baker Pratt becomes the first woman elected to Congress from New York, serving as a Republican in the 71st and 72nd Congresses.

1967

“The Manor” was renamed as The Harrison House, which was one of the first conference center hotels in the United States.

1985

The Mansion at Glen Cove has always been known for its exceptional conference and meeting spaces, earning accolades such as:

• One of the 10 Best Conferences in the United States by Corporate Meetings & Incentives magazine

• Award of Excellence by Corporate Incentives & Travel magazine

• The Pinnacle Award by Successful Meetings magazine

• The Planners Choice Award by Meetings Media magazines

• The Gold Key & Gold Platter Awards for Excellence in Hospitality and Food & Beverage by Meetings & Conventions magazine

2019

The Mansion at Glen Cove unveils 60 sophisticated and modern rooms, adding to its accommodations.

2025

The Mansion at Glen Cove was proudly awarded Best of Weddings by The Knot, recognized for being a top wedding venue desired by couples. Officially launched The Mansion Curators Program - aligning with the event industry’s best of the best, elevating event experience one curator at a time.