"Housed in the elaborate 64-room Andrew Carnegie Mansion on the Upper East Side, Cooper Hewitt delights design lovers with a permanent collection of more than 215,000 objects—ranging from ancient Roman marble and Renaissance drawings to contemporary pieces like 3D-printed glass—and invites visitors to spend time on the Arthur Ross Terrace and Garden." - Lauren Dana Ellman Lauren Dana Ellman Lauren Dana Ellman is a New York-based writer and editor who specializes in travel, lifestyle, food, and shopping content. Travel + Leisure Editorial Guidelines