Blenderbox is pleased to announce the launch of the new Silverstein Properties website. Silverstein Properties is one of Manhattan's leading real estate development and investment firms, offering fully integrated real estate services including design, development, leasing, management and operations. The firm owns and manages some of the most successful and high-profile properties in New York City (including 7 World Trade Center), and has developed, owned and managed more than twenty million square feet of office, residential and retail space.