For those who don’t know the legend of Siegfried and the dragon: it’s a legendary story from German mythology that tells the tale of Siegfried, who slayed a dragon, took a bath in the creature’s blood and became invincible. One spot on his body however didn’t get covered with the blood, which would lead to his demise later in the story.
The epic battle is said to have taken place at Drachenfels Rock in Königswinter. Close to this rock, Drachenburg was built in the 18th century. It’s an architectural ode to the great tale. Absolutely one of the most impressive castles I've seen in Germany.
You can read about the (mythological) life of Siegfried in “Das Nibelungenlied”, an epic poem written in Middle High German. Wagner also used the story in his famous opera “Der Ring Des Nibelungen”.
Read more about The Social Traveler at Drachenburg Castle.