Sighișoara Fortress, Romania

Sighișoara Fortress is the old historical center of Sighișoara municipality, Mures county, Romania. Built in the 12th century by Saxon colonists and kept almost unchanged to this day, it is still inhabited today. In 1999 the citadel was listed on the UNESCO World Cultural Heritage List. The fortress is surrounded by a wall of 930 m whose initial height was about 4 m. Later, the height of the wall was increased in some places up to 14 m. The wall was built between the 14th and 17th centuries as protection against Turkish attacks. The wall had 14 towers, of which 9 remain to this day. The towers functioned as the headquarters of the various craft guilds.