Buses 13, 24, 25, 27, 74, and 79 serve both museums, though you wouldn't have the energy to see both in a day.
There are numerous buses that serve the pair of museums. 
mnli hypothesis: There are numerous buses that serve the pair of museums.  premise: Buses 13, 24, 25, 27, 74, and 79 serve both museums, though you wouldn't have the energy to see both in a day.