St. Catherine’s Church was built for the Pärnu garrison in 1768 to replace the wooden church erected in 1752. It was named after Empress Catherine II, who travelled through Pärnu in 1764. As designed by architect P. Jegorov, St. Catherine’s Church is the one of the richest and most stylish examples of a baroque style in 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.