There are many shacks around Skyrim. Some serve a small purpose for quests, and are people's homes. You can see them on your map under one of the two icons:

• Abandoned Shack
• Alchemist's Shack
• Angi's Camp
• Anise's Cabin
• Black-Briar Lodge
• Cliffside Retreat
• Crabber's Shanty
• Drelas' Cottage
• Froki's Shack
• Goldenglow Estate
• Hall of the Vigilant
• Honningbrew Meadery
• Hunter's Rest
• Ironback Hideout
• Kynesgrove
• Luna's Hut
• Meeko's Shack
• Nightgate Inn
• Old Hroldan
• Pinewatch
• Riverside Shack
• Thalmor Embassy
• Traitor's Post