Facebook features a fluid, open environment, across its various subcultures.
Burns said reports of Area 404 being a "super secretive" lab are overexaggerated.
"If you're hanging out at work or bringing around your parents to show them the campus, you can bring them to the lab and we'll show you all the cool equipment and some of the things we're working on," he said.
He said that's not the norm for a major tech company's prototyping labs, which are often "behind several layers of badge access."
He said the office's openness allows for employees to easily solve problems together.
"There's definitely a lot of people walking around and a lot of things happening and conversations," he said. "You just have every opportunity to learn from your colleagues and to collaborate."
Kalinowski said Oculus has its own uniquely "high tech" subculture. Overall, she said Facebook is a company in which one can move about with ease. The result? Less barriers to getting work done.
"Once you're in, you're in," she said. "As an engineer, that's something I really appreciate."