It's a futuristic hallway.

Now that Peter had a chance to really get a good look at it, Peter realized that he had never been in a hallway quite like this, but he had seen ones like it on television quite a few times.

The hallway had a very futuristic feel to it. The doors he could see had no visible knobs or handles or hinges. He expected that they would slide off to the side or to the top with a whoosh noise when they opened but he wasn't in a hurry to see if they would.

He slowly moved down the hall and turned a corner, only to see that there was just more hallway, curving off in the distance. With both halls looking exactly the same, he didn't figure that it made much of a difference which way he walked.

He was about to decide, when the door directly next to him quickly opened.