The penthouse floor of the award-winning Quadrant Building is the home of the DTC Quadrant business center in the Greenwood Village area of Denver Tech Center (DTC). Adjacent to Interstate 25, the highway that runs right through the very heart of Colorado, the landmark tower building boasts views of Cherry Creek Lake and Denver. Many consider DTC to be a mini-downtown, as it shares the same busy atmosphere created by a mixture of businesses, restaurants, shops and hotels. Numerous large companies representing every sector have regional headquarters here and downtown simply because Denver is the largest city for 500 miles. However, defense-related operations are here because of the concentration of military bases in the area, and mining companies because of the mineral-rich Rocky Mountains. The DTC Quadrant business center boasts a lobby with a four-story stretch of marble, glass and architecturally appealing staircases. Nearby light-rail stations at Orchard and Bellview.