<p class="ingestion featured-caption">Marble House is in Newport, Rhode Island.Alexander Nesbitt — The Preservation Society of Newport County</p><ul class="summary-list"><li>Marble House was completed in 1892 as a summer home for William K. Vanderbilt and Alva Vanderbilt.</li><li>Built with half a million cubic feet of marble, it features 50 rooms and spans 140,000 square feet.</li></ul><p>Alva Vanderbilt's 39th birthday present from her husband was a 140,000-square-foot summer "cottage" on the shores of Newport, Rhode Island.</p><p>As heir to the Vanderbilt family fortune during the <a target="_blank" class href="https://www.businessinsider.com/gilded-age-mansion-tour-rosecliff-rhode-island-2024-8">Gilded Age</a>, William K. Vanderbilt spared no expense in building Marble House for his wife. It was designed by Richard Morris Hunt, the same architect who worked on <a target="_blank" class href="https://www.businessinsider.com/gilded-age-mansion-vanderbilt-rhode-island-breakers-photos-2024-8">The Breakers,</a> another expansive Newport mansion. Construction cost around $11 million in 1892, or about $380 million in today's dollars. The home's 500,000 cubic feet of marble alone cost about $7 million, or around $241 million today.</p><p>The marriage didn't last, but Marble House remained in her possession after their divorce. In addition to throwing extravagant balls and dinner parties, Alva Vanderbilt also hosted <a target="_blank" class href="https://www.businessinsider.com/womens-rights-suffragettes-voting-election-vintage-photos">women's suffrage</a> rallies on the property and leveraged her wealth to champion the cause. She even wrote the libretto for an operetta about women's suffrage, which was performed at New York's <a target="_blank" class href="https://www.businessinsider.com/presenting-a-history-of-the-astors-2012-4">Waldorf-Astoria Hotel</a> in 1915.</p><p>In recent years, the HBO show "<a target="_blank" class href="https://www.businessinsider.com/gilded-age-historic-mansion-photos-2024-5">The Gilded Age</a>" has used Marble House as a film set.</p><p>Take a look inside this historic Newport mansion.</p>