It is not clear to me why Santa Coloma is a separate T-list entry and why it is not included in the "Eglises romanes d'Andorre" site. Maybe because the round bell tower is unusual, or because original murals from the 12th century can be seen inside. However, we could not assess their quality, the church was closed. But Santa Coloma seems to have a special significance in Andorra, because since 2014, the church is depicted on the 10, 20, and 50-cent coins. The "Ensemble historique" also includes the church of Sant Vicens d'Enclar, which is located on a hill just above the village. But it can only be reached by foot and we did not visit. Santa Coloma is located only a few kilometers from Andorra la Vella, and a quick stopover might be worthwhile to check whether the church is open and the murals can be visited.