While many castles throughout history were left unfinished, the most famous "castle that was never built" is often cited as Schloss Falkenstein, intended to be the final and most ambitious masterpiece of King Ludwig II of Bavaria. Already known for building the fairy-tale Neuschwanstein, Ludwig envisioned Falkenstein as an even more dramatic, gothic pinnacle perched on a 1,277-meter-high mountain ridge. He commissioned elaborate plans from stage designers and architects, envisioning a "Robber Baron" style fortress with towering spires and a magnificent "King's Bedroom." However, construction never progressed beyond the building of a road and a water line to the site. When the "Mad King" died under mysterious circumstances in 1886, the project was abandoned due to his massive debts. Today, only the ruins of a much older, smaller medieval fortress remain on the site. Interestingly, Neuschwanstein itself is technically an "unfinished" castle; while its exterior looks complete, only about 15 of its planned 200 rooms were ever fully decorated before the King's death halted all work.