Located in the heart of the Frankenberg district of Aachen, the legendary Frankenberg Castle is a landmark of the city. Built of stone and bricks, this medieval castle dates back to the 13th century and was first mentioned in 1352, and during its long history The castle was home to many of Aachen's prominent leaders and noble families. At the beginning of the 20th century, the castle became the seat and workshop of the famous engineer and aircraft designer Hugo Junkers. Now it is home to the Aachen Historical Museum, where you'll find a rich collection of craft items and coins. murals and more.