Gold Coast Mansions on Long Island

Oheka Castle in Huntington on Long Island's Gold Coast — Oheka Castle, shown here in Huntington, is one of the most recognizable Gold Coast mansions on Long Island. Built in 1919 for financier Otto Hermann Kahn, the chateau-inspired estate is known for its grand architecture, formal gardens, and storied past. Today, Oheka Castle operates primarily as a luxury hotel, dining destination, and event venue; public access options may vary, so it is wise to check ahead before visiting. File photo: Felix Lipov, licensed.

Gold Coast mansions of Long Island remain enduring symbols of America’s Gilded Age, when some of the nation’s wealthiest families built grand estates along the island’s North Shore. Constructed mainly from the late 1800s through the early 20th century, these properties helped transform the region into a landscape of opulence, culture, and architectural ambition that still inspires visitors, historians, filmmakers, and admirers today.

What Is the Gold Coast?

The Gold Coast generally refers to the affluent stretch of Long Island’s North Shore, centered in Nassau County and extending into parts of western Suffolk County, where lavish estates flourished between the 1890s and 1930s. Banking barons, railroad tycoons, and industrial magnates, including the Vanderbilts, Pratts, Guggenheims, Coes, and Phippses, commissioned sprawling mansions, each with its own architectural style, grounds, and social history.

Sagamore Hill in Oyster Bay, home of President Theodore Roosevelt — Sagamore Hill in Oyster Bay was the beloved home of President Theodore Roosevelt and is preserved as Sagamore Hill National Historic Site. This iconic Queen Anne-style residence served as Roosevelt’s “Summer White House,” where he hosted world leaders, wrote extensively, and shaped American policy. Today, visitors can explore the historic grounds and related museum areas, while mansion tour availability and hours may vary by season. File photo: Little Vignettes Photo, licensed.

History & Social Scene

The Gold Coast era coincided with America’s rise as an economic powerhouse, as fortunes made in industry, finance, transportation, and trade were translated into palatial homes, private gardens, and carefully designed landscapes.
These estates hosted extravagant parties, charity balls, cultural gatherings, and political meetings, shaping a high-society world often compared with Newport and other elite enclaves of the era.
Writers such as F. Scott Fitzgerald drew inspiration from the North Shore’s glamour, wealth, and social contrasts; nearby communities like Great Neck and Sands Point are often linked to the world of The Great Gatsby.

Old Westbury Gardens mansion in Old Westbury, New York — This grand mansion at Old Westbury Gardens in Old Westbury is one of the most celebrated Gold Coast estates on Long Island. Built in 1906 for John S. Phipps and designed in the Charles II English Revival style, the house is surrounded by formal gardens, landscaped grounds, and elegant terraces. Today, Old Westbury Gardens welcomes visitors seasonally for house and garden visits, exhibitions, and special events. File photo: Felix Lipov, licensed.

Architecture & Design

The mansions showcase a wide range of architectural styles, including Tudor Revival, Beaux-Arts, Georgian, Mediterranean, and French Chateauesque design.
Renowned architects and landscape designers, such as Stanford White, Delano & Aldrich, and the Olmsted Brothers, helped create homes, gardens, greenhouses, terraces, and parklands modeled after European palaces and country estates.

Hempstead House at Sands Point Preserve on Long Island's North Shore — Hempstead House, seen here at Sands Point Preserve on Long Island’s North Shore, is one of the most impressive surviving Gold Coast mansions. Built in 1912 by Howard Gould and later owned by the Guggenheim family, this grand stone estate was inspired by English country houses and features elegant interiors, sweeping lawns, and formal gardens. Today, the preserve offers public access to the grounds, with mansion tours, events, and cultural programs available at various times of year. File photo: Little Vignettes Photo, licensed.

Legacy & Preservation

While many original mansions were lost, subdivided, or adapted over time, a significant number still survive as museums, historic sites, event venues, hospitality properties, schools, and private residences.
Notable Gold Coast Estates:
- Oheka Castle (Huntington): One of the largest private residences ever built in the United States, now known as a luxury hotel and event destination.
- Sagamore Hill (Oyster Bay): Home of President Theodore Roosevelt, preserved as a National Historic Site.
- Old Westbury Gardens (Old Westbury): The former Phipps family estate, open seasonally to the public with formal gardens, historic interiors, and cultural programming.
- Sands Point Preserve (Sands Point): Home to Hempstead House, Castle Gould, and Falaise, with trails, grounds, and estate history that reflect several layers of Gold Coast life.
- Planting Fields Arboretum (Oyster Bay area): The Coe family estate, renowned for its gardens, greenhouses, and historic Coe Hall mansion.
Many Gold Coast mansions have also appeared in films, television productions, and wedding photography, helping keep their architecture and stories in the public imagination.

Coe Hall at Planting Fields Arboretum on Long Island — The Coe family estate, known today as Planting Fields Arboretum State Historic Park, is a prime example of a Gold Coast mansion. Built in the early 20th century, Coe Hall’s Tudor Revival architecture and expansive grounds were designed to evoke the elegance of an English country estate. Today, visitors come for the mansion, gardens, greenhouses, and horticultural collections, with access details and tour schedules varying by season and program calendar. File photo: Little Vignettes Photo, licensed.

Visiting the Gold Coast Mansions

Many sites offer guided tours, seasonal events, art exhibits, and educational programs that invite visitors to step inside these grand homes and imagine life during the glamorous Gold Coast era.
The surrounding grounds, often designed with fountains, greenhouses, sculpture, woodlands, and formal gardens, remain destinations in their own right for strolling, photography, and quiet exploration.
Before visiting, check each property’s current hours, admission rules, parking details, and tour policies. Some estates have separate access for grounds and mansion interiors, while others function partly as private venues or hospitality properties.

Quick Info

Feature	Details
Era	Approximately 1890–1930
Location	Long Island’s North Shore, especially Nassau County and western Suffolk County
Notable Estates	Oheka Castle, Old Westbury Gardens, Sagamore Hill, Sands Point Preserve, Planting Fields
Architecture	Tudor Revival, Georgian, Beaux-Arts, Mediterranean, French Chateauesque, and more
Access	Public access varies by property; some operate as museums, historic grounds, event venues, or hotel destinations
Fun Fact	Long Island’s North Shore setting helped inspire the world of The Great Gatsby, including the fictional “West Egg” and “East Egg”

Experience the Gold Coast

Long Island’s Gold Coast mansions form a living museum of America’s age of ambition, artistry, and social change. Whether you explore historic rooms, wander formal gardens, attend a seasonal event, or simply admire the estates from the surrounding villages and roads, these landmarks tell an extraordinary story about wealth, design, preservation, and the timeless appeal of Long Island’s North Shore.