The House of Black Heads (Estonian Mustpeade maja) is a Renaissance-style building in Tallinn old town. The building's name is derived from its developers, the Brotherhood of Black Heads which was the guild of foreign unmarried merchants. The Brotherhood was founded sometime around 1399 and was active in Estonia and Latvia.
A 14th-century residential building probably occupied this site when the Black Heads bought up the property in the early 1500s. They immediately installed a new hall with an archless ceiling, but the serious rebuilding got underway in 1597 when the Dutch Renaissance façade, with its profusion of ornaments and carved decorations, was added. The eye-catching front door dates to 1640.
Inside you can see a two-naved, vaulted hall, which bought from the neighbouring St. Olav's Guild and dates to the 15th century. The site is frequently used for concerts and other gala occasions, and naturally any event held here will take on a timeless quality.
References: Tourism Tallinn
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.