A 1902 Gilded Age Mansion in New York City

We're visiting the Cooper Hewitt, Smithsonian Design Museum, housed inside Andrew Carnegie's former mansion, to explore one of New York City's most remarkable Gilded Age homes.

Completed in 1902, the Andrew Carnegie Mansion was among the most technologically advanced private residences of its time, introducing innovations including a full steel frame, passenger elevator, and central heating. Yet despite its scale and ambition, the house was designed first and foremost as a family home for steel magnate and philanthropist Andrew Carnegie, his wife Louise, and their daughter Margaret.

Joined by museum director Maria Nicanor, we tour the mansion's beautifully preserved interiors, from the gilded music room and oak-paneled dining room to Carnegie's private library, office, and the conservatory overlooking one of Manhattan's few enclosed historic gardens. Along the way, Maria shares the stories that bring the house to life—from embroidered dinner tablecloths signed by guests including Mark Twain, Marie Curie, and U.S. presidents to the architectural decisions that quietly expressed Carnegie's belief in innovation, industry, and progress.

Today, the mansion is home to the Cooper Hewitt, Smithsonian Design Museum, where its historic interiors provide the backdrop for exhibitions exploring architecture, technology, decorative arts, and contemporary design. More than a preserved historic house, the building continues to evolve, connecting one of America's great Gilded Age residences with the future of design.