Camp is in session this summer inside the Big Brother 21 house. The 16 new houseguests will get to experience a summer camp-themed house, complete with a campfire in the middle of the dining room table, pine beam-covered walls, a ladder up to the second story, and a vintage travel trailer that is hiding a surprise for whoever opens the door.

And of course, since this is Big Brother, CBS promises that this season will feature "a first of its kind twist that will force houseguests to rethink how they play the game." Given the camp theme, it's possible that the twist could be the much-rumored pairs conceit, where the houseguests will have to compete in teams of two, much like how summer camps often have different groups within them to develop a playful rivalry over games of capture the flag and whatnot.

While we'll have to wait and see what the big twist of the summer is, we can amuse ourselves by checking out this first look at the Big Brother 21 house. Check out the gallery below to peek inside where the houseguests will be living all summer.

Big Brother 2019: Meet the Season 21 Houseguests

Big Brother 21 returns with a two-night premiere on Tuesday and Wednesday at 8/7c on CBS.

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