Preeminent international developer Bizzi & Partners Development recently commemorated the publication of "400 FIFTH AVENUE: A New Gwathmey Siegel Landmark" during an exclusive book signing and cocktail launch party at the Rizzoli Bookstore in midtown Manhattan. Guests included real estate industry luminaries and architecture aficionados, who gathered in the historic West 57th St. store to receive their signed copy. Released and published by Rizzoli New York, the 216-page hardcover book celebrates the architecture, interiors and legacy of one of Gwathmey Siegel's last masterpieces and Milan-based Bizzi & Partners first New York City development. 400 Fifth Ave. permanently changed the New York City skyline when it was completed in 2010, joining the ranks of the Empire State Building and Chrysler Building with its stunning limestone façade, textured stainless-steel panels, and sculpted floor-to ceiling windows soaring 60 stories above Midtown. 400 Fifth Ave. shares the comprehensive plans for the property and explores every detail from the distinctive façade to the interiors expertly appointed by DAS Concepts. The book features an introduction by architecture critic Paul Goldberger, foreword by Robert Siegel of the award-winning Gwathmey Siegel & Associates Architects, and vivid photography by architectural and interiors photographer Evan Joseph. "Thank you to everyone who joined us in marking this momentous occasion," said Giuseppe Rossi, executive vice president of Bizzi & Partners Development. "Gwathmey Siegel's buildings represent the pinnacle of 20th and early-21st century modernist design and 400 Fifth Avenue is an important and concluding piece of that legacy. This book is a testament to that fact." Now nearing 90% sold, 400 Fifth Ave. perfectly blends Langham Place, Fifth Ave. (formerly The Setai) with a collection of exquisite condominium residences located on floors 31-60. Available residences range from studio to four-bedrooms, and feature elegant upscale finishes and fixtures, finely-crafted Italian wood cabinetry, hand-laid black oak flooring, stone countertops, diamond-angled floor-to-ceiling windows, and state-of-the-art appliances. Each residence yields its own unique and breathtaking view of New York City, including a collection of penthouses that offer unprecedented wrap-around views, from the rising One World Trade Center tower to the upper reaches of Museum Mile, the Hudson and East Rivers, and beyond. In addition to an array of exclusive resident amenities, including a state-of-the-art fitness center, lounge and terrace, homeowners at 400 Fifth Ave. enjoy Langham Place, Fifth Ave.'s superlative hotel services and conveniences right at their fingertips. One such convenience is Measure, a stylish and comfortable lounge featuring the cuisine of Executive Chef Jeffrey Seizer, formerly of Gramercy Park Hotel and Union Square Café. Measure offers an inspired menu of American and British comfort foods, an extensive selection of wines, cocktails and craft beers, and nightly jazz performances. Additionally, the hotel is home to a Michelin-starred restaurant, Ai Fiori; a sumptuous, full-service spa; and a Julien Farel Salon. Douglas Elliman Development Marketing is the exclusive sales and marketing agent for The Residences at 400 Fifth Ave. For more information, visit www.400fifthavenue.com.