Kunthar Keep
In the north of Falkreath, just west of Lake Ilinalta, the Skofnung sword lies in a nordic crypt. Retrieve it from the ghoulish grip of Kunthar himself.
Dragon Tomb
Enter this long forgotten tomb on the coastline of eastern Winterhold. Wander into the depths to challenge a less-than-living dragon.
Vault 101
Inspired by your favorite Fallout Vault, Vault 101 is now in Skyrim. This self sufficient Vault has everything the anyone would need, thanks to the Overseer.
Dwarven Island
Dwarven Island adds a new land mass surrounded by water, hidden away just north of Skyrim.
Gunnar Tomb
Heed the call of the Jarl of Riften and investigate the recently discovered tomb of Freyr Gunnar. The entrance will be found in the southwest of the Rift.