Sacramento International Airport — Sacramento, United States

Sacramento International Airport, coded SMF, sits north of California's state capital along the Sacramento River delta, serving a metropolitan region that has grown steadily as an alternative to the costlier Bay Area just a couple of hours to the west. A large-scale terminal overhaul, capped by the opening of a new Central Terminal B in 2011, replaced a cramped older layout with a design built around natural light and pre-security shopping and dining, a departure from the airport's more utilitarian past. SMF also operates one of the larger solar power installations at any American airport, an array that offsets a meaningful share of the facility's own electricity use. As California's government seat and an agricultural processing center for the Central Valley, Sacramento draws a mix of business travelers, state government traffic, and visitors heading onward to the Sierra Nevada foothills and Gold Country wine region east of the city.