Virgin Galactic said the world's first specially designed commercial spaceport was "functionally functional".
The company, owned by Sir Richard Branson, transfers all its space flights to Spaceport America in New Mexico.
So far, test flights – including the first successful launch of his space rocket aircraft last December – have been made in California.
More than 600 people have already paid £ 64.2 million to secure their tickets on Virgin Galactic maiden trips.
Virgin Galactic is currently presenting the interior of its Gateway to Space building in Spaceport America, which offers municipal spaces for prospective clients.
The company said it strives to choose an "elegant, experience-oriented concept", adding: "It was also created specifically to allow Virgin Galactic to create an unparalleled experience as customers prepare for the journey of their lives before they graduate. astronauts. "
Chief pilot Dave Mackay said Virgin Galactic is closer to launching its long-delayed commercial service following the arrival of VMS Eve, the company's rocket launcher, earlier this week.
The company merged with Social Capital's Hedosophia to become the first and only publicly traded ad human space flight last month.