On the way up to Peleș Castle, it’s worth popping in to see the Sinaia Monastery. The town of Sinaia was named after the monastery which was named after Mount Sinai. Romanian Prince Mihail Cantacuzino, a descendant of the Byzantine royal family, went on a pilgrimage there. Upon his return to Romania he founded the monastery in Sinaia in 1695. Visiting the monastery is free but a small optional museum is on the grounds and charges a 5 lei admission.
After passing through the gates next to the 1892 bell tower, the first structure you will see is the Great Church. It was built in 1842 and was the first church in Romania to use electric lights.
The much smaller Old Church was built in 1695 and has some impressive iconography done by Pârvu Mutu.
The grave of former Romanian Prime Minister Take Ionescu is in a small room off the inner courtyard. The walls are carved with excerpts from his speeches.