The single-nave St. Martin’s Church was built by Johannes Orgas, the bishop of Saare-Läänemaa (Ösel-Wiek), in the beginning of 16th century. His shield is located in the church wall, above the north portal. The oldest artefact inside the church is a Gotland-style baptising stone. Also valuable are the altar wall and Empire style pulpit. The church’s collection of 17th-18th century epitaph coat of arms is third in size after Tallinn Dome Church and Niguliste Church.
Reference: Visit Estonia
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.