The main reason to make the 20-minute climb to the top of the Gyantse Dzong is for the fabulous views of the Pelkor Chöde Monastery and Gyantse's whitewashed old town below. Entry to the dzong is via a gate just north of the main roundabout. Vehicles can drive about halfway to the top.
Many of the 14th-century fort’s buildings and rooms are open for exploration, though most are bare. There’s a kitschy attempt to re-create the old tax office behind the ticket booth, and a little further to the left you’ll find a dungeon, chapel and torture room with dioramas. Bring a torch to explore the spooky lower chambers beneath the chapel.