Great Gusliar or
Gusliar Wonders (Великий Гусляр) is a
Speculative Fiction cycle by
Kir Bulychev. It consists of seven books and over sixty short stories set in a city based on the Russian city of Great Ustyug (Veliky Ustyug). One day, the city is visited by aliens. After that event, many fantastical things happen to Gusliar.