Mubarak Mandi is the heart of old Jammu — a rambling complex of palaces, courtyards, and formal halls built by the Dogra rulers from the 18th century onward. Different sections were added in different eras, producing an architectural mash-up that is simultaneously confusing and fascinating. The Pink Hall, Sheesh Mahal (mirror palace), and multiple interconnected courtyards give a sense of the original scale.
The Dogra Art Museum within the complex houses a worthwhile collection of Pahari miniature paintings, ivory carvings, bronzes, and textiles. Much of the larger complex remains in partial disrepair — which gives it an atmospheric rawness that fully restored palaces lack. Plan an hour minimum if you want to explore properly.