The Geological Museum of Hunan presents the province through fossils, minerals, rocks and geological displays, giving Changsha a useful science-minded museum beyond the better-known history and art collections. It is especially good for visitors interested in Hunan's landscapes and mineral resources.
The museum sits south of the central tourist core, so it needs a deliberate trip rather than a casual old-town wander. Pair it with other newer civic museums or cultural sites in the same part of the city if you want a fuller day away from Yuelu Mountain and Orange Island.