The district Headquaters of Spiti valley. Dhankar monastery is a must visit. Its a nice little town with amazingly friendly people. the town is covered by snow for 4 5 months a year and the locals say they love this thing about their town, It gets them an opportunity to connect well with themselves. You can visit Kibber, Ki monastery, Lalung monastery, Pin valley etc by making Kaza your base. the market is a little expensive but do buy yourself some lovely souvenirs from here.