10 Secrets About OHEKA Castle Most Long Islanders Don't Know

Few landmarks are as iconic on Long Island's Gold Coast as OHEKA Castle. From lavish weddings to Hollywood productions, the château has become synonymous with North Shore grandeur. But beyond the manicured gardens and grand staircases are some fascinating stories that many locals have never heard.

1. OHEKA Isn't a Word, It's a Name

The name "OHEKA" is actually an acronym created from the estate's original owner: Otto HErmann KAhn. The financier used the same naming convention for several of his properties and even his yacht.

2. It's the Second-Largest Private Home Ever Built in America

At more than 109,000 square feet and 127 rooms, OHEKA remains the second-largest private residence ever constructed in the United States, surpassed only by the Biltmore Estate.

3. The Hill Beneath the Castle Is Man-Made

Before construction even began, workers spent roughly two years building up the land beneath the mansion. The result? A château perched on what is considered one of the highest points on Long Island.

4. It Was Built to Be Nearly Fireproof

After losing a previous home to fire, Otto Kahn insisted OHEKA be constructed using steel and concrete rather than traditional wood framing. That decision likely saved the mansion decades later when it survived more than 100 documented arson attempts while vacant.

5. There Was Once a Private Golf Course, Airstrip, and Massive Greenhouse Complex

The original 443-acre estate wasn't just a mansion. It included an 18-hole golf course, tennis courts, orchards, stables, one of America's largest private greenhouse operations, and even a landing strip.

6. It Helped Inspire The Great Gatsby

While F. Scott Fitzgerald never confirmed a single inspiration for Gatsby's mansion, OHEKA and its extravagant parties are widely believed to have influenced the lavish Gold Coast lifestyle depicted in the novel.

7. OHEKA Appeared in Citizen Kane Decades Before Taylor Swift

Most people know the castle from Taylor Swift's "Blank Space" video, but OHEKA appeared in the 1941 classic film Citizen Kane, where it was used to depict Xanadu, the sprawling estate of Charles Foster Kane.

8. It Nearly Disappeared Forever

After years as a military academy, the property fell into severe disrepair. By the early 1980s, vandals had stripped much of the interior, and demolition was a real possibility. Developer Gary Melius purchased the estate in 1984 and undertook one of the largest private residential restoration projects in the country.

9. The Gardens You See Today Were Recreated

The formal gardens visitors admire today are not entirely original. They were painstakingly restored using historic plans created by the renowned Olmsted Brothers landscape architecture firm.

10. You've Probably Seen It on Screen More Than You Realize

Beyond Taylor Swift, OHEKA has appeared in productions including Royal Pains, Gossip Girl, Succession, The Emperor's Club, and numerous commercials and photo shoots. Hollywood can't seem to stay away from Long Island's castle.

The Bottom Line

OHEKA Castle is much more than a wedding venue. It's a surviving piece of the Gold Coast era, a Hollywood favorite, an architectural marvel, and one of the most fascinating landmarks in Huntington Township. The next time you drive past those gates, remember: behind them is a century of stories, secrets, and Long Island history.