The Central Platte Valley may be one of the oldest parts of the city, but today it looks completely new, with cool-looking modern architecture filling the once-dusty, desolate railyards. The most recent standout is Glass House, at 23 stories the tallest structure in the area. Designed by the multi-disciplin-ary firm Preston Partnership and developed by Wood Partners and East-West Partners, this condominium project includes two adjacent towers with lively cubic volumes that reflect off each other in the glass walls; the twin structures sit on a unified concrete podium that does double duty as a parking garage. Glass House has great views of both downtown and the Front Range -- but it's looking pretty good itself.