LaGuardia has been mistaken by many as a genuine portal to hell, but as those unfortunate enough to recently visit the Queens airport must have noticed, construction and improvements are under way. And more is due to come. Yesterday, Governor Andrew Cuomo was at the groundbreaking of Delta Airlines’ new terminal where new renderings were also revealed.

The new terminal is part of a $4 billion project to improve the airport, of which Delta will provide $3.4 billion with New York State filling in the rest. (Skanska is helming the project, with HOK and WSP USA acting as “design partners.”)

Most renderings depict a typically serene terminal environment (a far cry from what LaGuardia witnesses today) while some scenes include art from Jeff Koons and others with interior greenery in the form of small trees and shrubs. A bridge with moving sidewalks, enclosed by glass and a cross-bracing frame, also appears to be in store.

Delta’s terminal is due to be finished by 2021 with the first gates opening by 2018.

“LaGuardia is a pillar of New York’s transportation network and a key driver of economic growth, but for too long the airport has been unworthy of New York State,” Cuomo, said in a press release. “The groundbreaking at Delta’s facilities represents another step forward as we build an entirely new airport at LaGuardia.”

Meanwhile, Queens Borough President Melinda Katz added, “Today’s groundbreaking is a significant milestone in the transformation underway at LaGuardia Airport into a state-of-the-art, unified entry portal befitting of the international capital of the world.”