Passage: Tashkent was rebuilt as a model Soviet city with wide streets planted with shade trees, parks, immense plazas for parades, fountains, monuments, and acres of apartment blocks. The Tashkent Metro was also built during this time. About 100,000 new homes were built by 1970, but the builders occupied many, rather than the homeless residents of Tashkent. Further development in the following years increased the size of the city with major new developments in the Chilonzor area, north-east and south-east of the city.At the time of the collapse of the Soviet Union in 1991, Tashkent was the fourth-largest city in the USSR and a center of learning in the fields of science and engineering.

Question: When Tashkent was rebuilt, what was it rebuilt as?
model Soviet city