The University of Colorado Hospital celebrated a $20 million expansion of its cancer center in Aurora that adds 40,000 square feet to the facility.

The center hosted tours and a ribbon-cutting on Thursday. Officials estimate the expanded Anschutz Cancer Pavilion could treat 11,500 cancer patients annually—a 60% increase, according to a news release. The facility now stands at 148,000 square feet and includes expanded space for radiation therapy, urologic oncology, bone-marrow transplants, a G1/Phase 1 cancer program and surgical oncology.

Half of the funding for the project, for which construction began in 2010, came from donations. The cancer center is part of the 437-bed University of Colorado Hospital and had about 150,000 outpatient visits in 2010.