St. Radoneza Sergius Church was built from 1874 to 1877. The author of the building was Jānis Frīdrihs Baumanis (1834-1891) – the first educated architect of Latvia. The church was built from split boulders. Cornice, corners of the building and ledges were made of local bricks. There is Mangdenu family`s vault next to church (built in 1906).References:
The city walls of Avila were built in the 11th century to protect the citizens from the Moors. They have been well maintained throughout the centuries and are now a major tourist attraction as well as a UNESCO World Heritage Site. Visitors can walk around about half of the length of the walls.
The layout of the city is an even quadrilateral with a perimeter of 2,516 m. Its walls, which consist in part of stones already used in earlier constructions, have an average thickness of 3 m. Access to the city is afforded by nine gates of different periods; twin 20 m high towers, linked by a semi-circular arch, flank the oldest ones, Puerta de San Vicente and Puerta del Alcázar.