Berk

This is where you train your dragons and this is also the main central of the game.

Ready Made Buildings
There are ready made buildings in Berk, you can upgrade some of these buildings.

Meade Hall (Great Hall)
The Meade Hall is the main central of the game, you can upgrade this to get more buildings to increase your Viking amount. It bears a resemblance to the Great Hall as it might actually be just a renamed version of it.

Hangar
There is limited space on Berk so when you have too many dragons, you can store them in the Hangar. But there is a maximum of 50 dragons.

Fish Basin
In the Fish Basin, you store all the fish you collect. Upgrading the Fish Basin allows you to make more space for Fish.

Wood Stack
In the Wood Stack, you store all the wood you collect. Upgrading the Wood Stack allows you to make more space for Wood.

Academy
In the Academy, you train your dragons. If you upgrade with Runes, you can train more dragons at once.

Hatchery
In the Hatchery, you hatch your dragons. If you upgrade with Runes, you can hatch more dragons at once.

Gothi's Hut
Right above the Meade Hall, Gothi's Hut is there. You can earn an achievement for tapping on Gothi's Hut. Other than that, there is no use for Gothi's Hut.

Buildable Buildings
In some buildings. You can build them with Wood and get new quests.

Snotlout's House
When building Snotlout's House, you get his Quests and the chance to buy Hookfang.

Astrid's House
When building Astrid's House, you get her Quests and the chance to buy Stormfly.

Ruffnut's & Tuffnut's House
When building Ruffnut's & Tuffnut's House, you get their Quests and the chance to buy Barf & Belch.

Fishlegs' House
When building Fishlegs' House, you get his Quests and the chance to buy Meatlug

Eret's Boat
When building Eret's Boat, you get his Quests.

Valka's Sanctuary
When building Valka's Sanctuary, you get to make your dragons into Titan's.

Resource Buildings
In some buildings. You can send your dragons to get resources from them.

Fish Hut
In the Fish Hut, you send your dragons to collect Fish.

Sawmill
In the Sawmill, you send your dragons to collect Wood.