Best Environment for the Enviro-Friendly
Alliance Center
This five-story LoDo treasure, just behind the Tattered Cover, is more than a nicely updated historic building. It’s also one of the greenest retrofits in town, registered for two LEED certifications — and home to a couple dozen leading nonprofits, from the Sierra Club and the Center for Native Ecosystems to Colorado Common Cause and ProgressNow. With its krypton-gas-infused windows, sensors that detect natural light and adjust light fixtures accordingly, dual-flush toilets and other features, the Alliance Center is a place for groups committed to sustainability to walk the talk.