Gold Coast Mansions on Long Island You Can Visit

This is a research piece.
We are planning to visit a few Long Island Mansions this summer / fall, and decided to share the list with everyone.
0:10 - 1. Manor House at Bayard Cutting Arboretum
0:29 - 2. Cole Hall at Planting Fields Arboretum
0:49 - 3. Coindre Hall
1:07 - 4. Falaise Museum
1:25 - 5. The Mansion at Glen Cove
1:45 - 6. Hempstead House
2:03 - 7. Mill Neck Manor House
2:23 - 8. NYIT de Seversky Mansion
2:43 - 9. Old Westbury Gardens
3:01 - 10. Oheka Castle
3:21 - 11. The Childs Frick Estate
3:40 - 12. Vanderbilt Museum and Planetarium
4:00 - 13. Woolworth Mansion - Winfield Hall
Just a short ride from New York City on Long Island’s north shore lies a place of uninhibited wealth and opulence immortalized in F. Scott Fitzgerald’s book, The Great Gatsby. Many of the mansions on the “Gold Coast,” so-called due to the huge concentration of fortunes here, are known to have inspired the setting in The Great Gatsby, and are open for the public’s perusal and enjoyment.
These mansions are now transformed into arboretums, museums, hotels and more and the general public can visit and explore.