The newest addition to the MGM Resorts International portfolio, the landmark MGM National Harbor—featuring 1 million square feet of gaming, lodging, entertaining, dining, retail and parking space—is a showcase for sustainability on the eastern shore of the Potomac River, just south of Washington, DC. Every element throughout the 24-story mixed-use development was designed with sustainability in mind, including extensive use of natural light, LED lighting and water-saving features, such as the 750,000-gallon cistern that will collect rainwater.