Your Bastion is the default screen when starting up Raid: Shadow Legends and contains numerous structures for your use.
Portal[]
Using the portal lets you summon Champions through shards.
Tavern[]
The Tavern allows you to upgrade your Champions
Sparring Pit[]
Allows your Champions to passively gain experience.
Market[]
The Market sells Shards, Champions, Artifacts, and refreshes every hour.
Great Hall[]
The Great Hall allows you to unlock global bonuses for your Champions.
Gem Mine[]
The Gem Mine constantly produces gems for your use.
Campfire[]
The Campfire has not been added to the game.