But a lot of us were left with questions: Can the door be opened from the other side? Do they take a long time to build? And where can I buy one?

We reached out to the artist for some answers.

"You just have to push it [to open the door from the other side] — that's all," Torggler wrote to Business Insider in an email. "Honestly, in the ideation phase, I was skeptical myself that the door could be opened properly from the other side. Building and testing the first prototype convinced me!"

Torggler is currently building the doors by hand in his studio in Austria according to customer specifications (some with specially designed locks) and shipping them internationally. He would not disclose the price since it can vary based on materials and how much time the doors take to build. But he said, "the price will be similar to other high-quality design products."