which city with the smallest population of all the members of the Council of Europe Chiesa di Sant'Andrea  located?
Chiesa di Sant'Andrea (Serravalle) Chiesa di Sant'Andrea (Serravalle) is a church located in Serravalle, San Marino. It was built in 1824 over the ancient walls of the former city. It belongs to the Roman Catholic Diocese of San Marino-Montefeltro. It was built in 1824. The church was dedicated to St. Andrew and the Virgin Mary.
Senarica Senarica is a village in the Abruzzo region of central Italy. With a population of fewer than 300 people, Senarica was an independent republic for about four centuries until the end of the eighteenth century. It was the smallest state to maintain an independent status for that long, although now it is a "frazione" of the "comune" of Crognaleto.