Fans finally got answered about the Upside Down in Stranger Things season 5. Here's more of what we know about this world.

Here’s how Matt Duffer explained the major turning point in the history of Stranger Things: ...

However, viewers were kept in the dark until season five's second batch of episodes, now streaming on Netflix.

We finally know what the Upside Down really is in Stranger Things — get details on the major reveal in Season 5, Volume 2.

After keeping us in the dark for almost 10 years, Stranger Things has finally revealed what the Upside Down actually is – and ...

It's certainly satisfying to get the answers about the Upside Down that have evaded audiences for so long, but, in some ways, ...

If that set just feels too evil to play with for too long, then it's definitely time to catch up with Joyce and Hopper at the ...

Stranger Things: The First Shadow, the stage play and prequel story that debuted prior to season 5, provides a little hint to ...

On Christmas Day, Stranger Things fans finally discovered the series-long mystery of the Upside Down, an alternate dimension ...

Stranger Things revealed the real origin of the Upside Down, and it flips a key element of the series on its head.