Nevertheless, San Juan is the economic center of the province and also the most visited place. It is known for its modern architecture that differentiates it from others cities in the rest of the country, with wide tree-lined streets as well as hardwood parks, plazas and walkways, in the middle of the desert of San Juan. This is the cause for which has the nickname of 'city oasis'. The city holds several attractions such as Sarmiento's birthplace and modern Cathedral, among others.