See inside a historic 50,000-square-foot mansion on New York's Gold Coast that's featured in 'The Gilded Age'

Gabbi Shaw/Business Insider

The North Shore of Long Island is known as the Gold Coast thanks to its collection of lavish mansions, which date back to the early 1900s. Many of these homes are thought to have inspired F. Scott Fitzgerald's West Egg in "The Great Gatsby."