Rooms That Rock 4 Chemo (RTR4C) is a nonprofit that transforms dreary chemotherapy rooms into uplifting spaces. The organization was started in 2011 when an artist wanted to enhance the chemotherapy rooms of her doctor's office. Since then, over 154 rooms in 15 facilities have been converted through a process where RTR4C identifies rooms for transformation, implements fundraising to cover costs, and has volunteer interior designers work with patients and staff to develop design plans which volunteers then implement over a weekend.