According to Valmiki Ramayana, after reaching Janakpur all three stayed in the garden of Janakji. Till date, we have one of the forms of Saga Vishwamitra at Bisol. Bisol is a twisted form of Vishwamitra.
Valmiki Ramayana 1/50/4 to 25, Manas 1/213/2,3,4 1/214 doha to 1/216/4
