PORTLAND, Ore. — Throughout the past four years of construction, officials at Portland International Airport promised that the new main terminal would be worth the wait and the hassle — and they were absolutely right, according to many of the first travelers to pass through on Wednesday. "It's amazing.

I think it's beautiful," said United Airlines pilot Brian Buck, who is based out of Portland. "I've been waiting to see this thing unveiled, and it's impressive ..

. one of the nicest domestic airports, I think, in the country, really." "Beautiful" is the word that most often came up when passengers and visitors were asked to describe their first impressions, with many pointing to the 9-acre mass timber roof as the standout feature.

Throughout the day, people could often be seen pausing to look up and snap photos of the sprawling structure. "Honestly, the ceilings are beautiful," said Katherine Betz, who was flying in from Boston. "We feel almost outdoors.

" Rick Leverence, who was traveling with Betz, also complimented the open and airy feeling of the terminal, which he said avoids the congested and claustrophobic feeling of some older airports. The oak floors in the center of the terminal and the indoor trees and gardens dotting the interior were hits as well, contributing to what multiple travelers described as a grounded and natural feeling. "There's this really nice earthy element to it," said Diana, who was traveling from Texas.

"I think it's really soothing, especially.