Buses are lousy and get stuck in a traffic. There is no such thing like subway, mrt, lrt or monorail. Taxi is the best option.
Blue bird taxi is definely and the best choice of the most number of passengers.
What are the must-see places? For the art and culture center, Nadi gallery is the first on the list situated in puri indah. Diamond city hanging bridge is historical because it is known as the central bridge of old Batavia built in 1628. What I really have to visit is the Reformation Monument which commemorates the killing of 4 Trisakti students by the police during the massive demo.