Vennernes Kro
What is the Friends Tavern?
If you've only started playing, you will notice a ruin along a river to the north of your city. Once you unlock the Construction research in Bronze Age, this will become a functional building - the Friends Tavern.
Your Tavern will come with its own interior, a small table and a few chairs. All your ingame friends can visit your Tavern and sit at these chairs if they are empty. Whenever there are friends sitting at your Tavern, you will be able to collect Silver and empty the table, making space for new friends to visit you. With this Silver you can activate various powerful boosts for your city or customize your Tavern to not only make it more appealing but also to increase your Silver income.
You can visit the Tavern of every friend once every day. This can easily by done via the social bar - simply open your friends list and you'll find a button for visiting their Tavern (on mobile you will need to tap the player's avatar for this option). To be able to sit down in a Tavern of your new friend, you have to wait 24h for your friendship to become strong enough. To make sure that this limitation does not affect new players, it will only kick in once you have removed 20 people from your friends list.
As you progress through the ages so will your Friends Tavern - it will change its appearance in specific eras!
Tavern Room
Your Tavern comes with a table for 4 chairs, but only 3 chairs are unlocked. The first chair gives you 50 Silver, and then it increments with +2 for every next chair. This means that when you collect your table with multiple players on it you will gain more Silver. But you need to keep in mind that if all your chairs are taken then other friends can't visit your Tavern.
As mentioned you will find various upgrades for your Tavern which you can purchase using Silver (or Diamonds if you do not have Silver - the cost in Diamonds is 1/2 of the Silver cost). Here is a list of those upgrades, the effect they have, and their cost in Silver.