Tied as my favorite room with the Morning Room at the iconic Breakers Mansion in Newport, the jaw-dropping library is almost too good to be true. The library was designed to be the centerpiece of life for Cornelius Vanderbilt, who was always well-read. The walls are paneled with Circassian walnut cut in Europe and stamped with gold. The ceiling is coffered with more gold leaf. The fireplace in the library is probably my favorite in the mansion, which was acquired from a 16th-century French chateau, Chateau d’Arnay Ie Duc. The walls in the library and its smaller alcove are covered with wainscoting of Circassian walnut decorated with low relief carving and gold leaf; the walls above the woodwork are covered with panels of gold-embossed Spanish leather. Yes, leather walls! What is your favorite part of the Breakers Library??