Caligaris Epsilon Six

Caligaris Epsilon Six was a holiday planet active in the 77th and 78th century. It was designed and constructed to resemble a fantastic medieval European version of Earth, complete with genetically engineered dragons and animantronic fairies.

It was placed under planetwide quarantine for recombinant yersinia pestis in 7711; the quarantine was lifted some 150 years later, with the assistance of the Doctor and Amy Pond. (IDW: A Fairytale Life)