Incorporated in 1990, SeaTac is a relatively new city by Washington standards. Known as Hospitality City, SeaTac boasts the largest concentration of accommodations in the state outside downtown Seattle, and is also home to the Seattle-Tacoma International Airport, a major port of entry in the western United States. Since its inception, the city has striven to create substantial green space for visitors and locals to enjoy, an aim evident in the 165-acre North SeaTac Park. Among the highlights of this park are a skateboard park and the Highline Botanical Garden. The airline industry is a major source of employment in SeaTac, with Boeing and several domestic airlines calling this city home. Public art figures highly in the character of this city and there are several sculptures available for visitors to view. The local public transit reflects the city's commitment to art with etched glass adorning the bus shelters around town.