In what is artistically a predominantly Mughal city, the National Museum, on Janpath (Queensway) just south of Rajpath, is worth a visit for its collection of old Hindu sculpture, in particular those from medieval India of the kingdom of Vijayanagar.
There are no museums located south of Rajpath, they're all in Rajpath. 
mnli hypothesis: There are no museums located south of Rajpath, they're all in Rajpath.  premise: In what is artistically a predominantly Mughal city, the National Museum, on Janpath (Queensway) just south of Rajpath, is worth a visit for its collection of old Hindu sculpture, in particular those from medieval India of the kingdom of Vijayanagar.