The three bells of the Holy Trinity Church are not hidden, but perfectly visible and attached in the form of a triangle. There is no better symbol for the Holy Trinity than three bells in a triangle. The three bells have a different size and most likely a beautiful sound. Unfortunately, they didn't ring when we were there.
Church of the Holy Trinity
"On the narrow, part of the land on which lies the Old Town of Budva, next to the ramparts and the Citadel on the west side there is a church of the Holy Trinity.
After the downfall of the Venetian Republic in 1797, Austria allowed the construction of the Church of Holy Trinity at the request of the orthodox population of Budva, supported by the Bishop of Montenegro, and its construction was finished in 1804. It has a bell loft with three bells and a dome."
Source and further information: www.adrialine.me/_en/holy_trinity.html