The castle at Burghausen in Upper Bavaria is 1,051 meters in length, making it the longest castle complex in the world. From its walls, there's a stunning view to be had of the preserved Old Town with its brightly painted patricians' houses. The high street is called "In den Grüben", and as far back as the Middle Ages many craftsmen practised their trades in its late Gothic buildings. Today you can still find many traditional workshops here. One of these is Sigi Franz's Glaspunkt.