585,000 GSF clinical expansion of the Longwood Medical Area Campus to address the critical capacity needs of the hospital. The 11-story tower (plus four below-grade levels) will be the largest building in Boston Children's history, providing a new cardiac center of excellence as well as the replacement of double occupancy patient rooms with single patient rooms. Additionally, the building will include a replacement NICU, clinical and logistical support services (such as lab, pharmacy, and dietary), as well as a variety of interior and exterior green spaces for patients, families, and staff. A one to two-story sky bridge will connect the Hale Building to existing hospital bed floors on campus.