The Vancouver Crystal Condoplex is an underwater glass condoplex Dunkelzahn had build in the 2050s after hearing a Chinese tale about how dragon's are suppose to live in crystal palaces under the sea.
Kelvin, the master craftsman who made the glass for the condoplex, became a master mage after the Awakening and combined his skills. They say he managed to fuse his essence with the glass, living on in the walls of the crystal palace in astral form.
Dunkelzahn's Will bequested it to Akira Kageyama after his death. Kageyama lived there at least until 2062.