Surprisingly Affordable! The Heights at Columbia Knoll, in beautiful Northeast Portland, offers affordable retirement living in a luxurious setting. Our independent retirement community features luxury one and two bedroom apartment homes with fully equipped kitchens, spacious closets, and emergency call system. Beautifully manicured grounds and scenery surround our 9+ acre campus, situated on the former site of the Shriner's Children's Hospital. Located minutes from downtown Portland and within easy access to restaurants, shops and local attractions.