See inside a $300 million Gilded Age mansion built for heirs who died on the Titanic that sat abandoned for years

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Lynnewood Hall.
in 1897, Lynnewood Hall was built in Elkins Park, Pennsylvania.

Courtesy of Lynnewood Hall Preservation Foundation

Take a look inside Staatsburgh, a 30,000-square-foot Gilded Age mansion whose owners held tickets for the Titanic

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Staatsburgh
Staatsburgh.

Talia Lakritz/Business Insider

See inside Oheka Castle, the 127-room Long Island estate that inspired 'The Great Gatsby'

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oheka castle
The view of Oheka Castle from the grounds.

Gabbi Shaw/Business Insider

A Gilded Age train station transformed into three cottages is on sale for less than $1 million. See inside.

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Old Depot Way was built in the late 1800s.
Old Depot Way was built in the late 1800s.

Courtesy of Houlihan Lawrence

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