If you know a little something about architecture and read Denver's skyline like a book, it tells a story: that most of this city's downtown is anchored and defined by large and extremely tall buildings from the oil boom of the late 1970s and early 1980s, with only a few newer elements. But that story is now turning a page, as the current development boom has finally inspired new skyscrapers. With its theatrical shape, the standout is definitely 1144 Fifteenth Street, by Pickard Chilton architects and developed by Hines. Rising forty stories, the building has distinctively faceted elevations, with an outrageously sculptural skyline that's split into parts by complex naturalistic curves. The building's departure from rectilinearity is pronounced by the all-over geometric grids of the curtain walls, which introduce true horizontal and vertical orientations. Nearing completion, the striking new building will be occupied by the offices of Chipotle, Optiv and Gates, among other tenants.