Landštejn - Credit: Wikimedia Commons
Landštejn Castle () is a 13th-century castle in Staré Město pod Landštejnem in Jindřichův Hradec District in the South Bohemian Region of the Czech Republic. The first written record of the castle is from 1231, at which time it was the largest Romanesque castle in the Czech lands. It is one of the oldest and best preserved such structures in Europe. The two large towers are connected by a wall defining the upper castle and its courtyard. The six-story southern tower is the main tower and is fully preserved, including a gate in the western wall. Read more on Wikipedia
Source: en.wikipedia.org