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.
The Walls of Constantinople are a series of defensive stone walls that have surrounded and protected the city of Constantinople (today Istanbul) since its founding as the new capital of the Roman Empire by Constantine the Great. With numerous additions and modifications during their history, they were the last great fortification system of antiquity, and one of the most complex and elaborate systems ever built. They were also the largest and strongest fortification in both the ancient and medieval world.
Initially built by Constantine the Great, the walls surrounded the new city on all sides, protecting it against attack from both sea and land. As the city grew, the famous double line of the Theodosian Walls was built in the 5th century. Although the other sections of the walls were less elaborate, they were, when well-manned, almost impregnable for any medieval besieger.