Lego's are an extremely popular toy that just about everyone can say they played with as a kid. The toys are so popular that the line has expanded with detailed sets to accommodate grown up kids with the imagination to build detailed environments.
These more expensive sets allow the imagination to run wild and several Youtubers have done just that, creating Area 51 themed Lego worlds where we see aliens and humans interact. It's a pretty fun escape - check out the video below:
A YouTuber named AlmightyArjen has even created a series based on Lego bricks that provides a fictional look at day to day life on the secret base. Check out this video: