A small house with all crafting stations, the smelter and tanning rack are built into the forge. All DLC's are required as well as the latest version of Skyrim.
**Spoiler**
The key must be pickpocketed from Tonilia in the Thieves Guild.
The entrance is a small trap door immediately to the right as you enter Riften.
**End Spoiler**
**Spoiler**
The key must be pickpocketed from Tonilia in the Thieves Guild.
The entrance is a small trap door immediately to the right as you enter Riften.
**End Spoiler**