Barbaric Archipelago (Books)

The Barbaric Archipelago is the setting for all the How to Train Your Dragon books. A map is often included at the beginning of each book, but it sometimes focuses on certain parts of the Archipelago, depending on the topic of the book. Some of the books also focus on islands not found in the Barbaris Archipelago. Such as the Lava Lout island in How to Twist a Dragon's Tail.

Islands
The main island settings in the books are the Isle of Berk, Meathead Islands, and Hysteria. Other islands include the Bog-Burglar Islands, the Peacable Country, the Mazy Multitudes, Visithug Territories, Berserk,Villainy, The Outcast Lands, Lava Lout Island and the Ugli-thug slavelands. In the film, the only two islands visited are Berk, and the Dragon Nest. Later on Astrid and Hiccup find a island with the sleeping Soul Render.

Seas
Some of the mentioned seas are The Sullen Sea, the Sea-known-as-Woden's-bathtub, and the Wrath of Thor. The Wrath of Thor is a thin straight of rapid water running between Villainy and Hysteria.

Other Locations
Assumingly to the north of the Archipelago lie the Icy Wastes, meaning the Roman Empire lies to the south, and the Open Ocean lies to the west. And after the crossing toward the open ocean you reach America.