Xanadias

Xanadrias are a fictional location, however, it seems that you may be referring to Xanadu or possibly Mount Xanadu, a fictional setting in a popular video game series.

However, Xanadu is a real location, a peak in the Teton Range of the Rocky Mountains, located in Grand Teton National Park, Wyoming. It is a prominent feature of the mountainous landscape and is considered by many to be the most picturesque site in the park.

Mount Xanadu is also real location, a mountain in the Brooks Range, Alaska. It can be found approximately 65 miles north of the Dalton Highway.

However, no conclusive information is available about a structure or place simply called "Xanadias."