In 1890, he undertook a long trip which brought him to a WorldExhibition in Tashkent, the theme of this exhibition - From Turkey to Turkistan, 1890. Paul Nadar's "photo reportage" is one of the first in the history of photography.
He leftParis for Istanbul on a train and crossed the Black Sea. Having reached Batumi, he crosses the Caucasus through Tbilisi and Baku and arrives in Turkistan - present-day Turkmenistan and Uzbekistan. He travels the region in two months and takes around 1,200 photos of crowds of people in the bazaars and markets of Asia, the great sandy spaces of deserts, mosques, mausoleums and all the majestic vestiges of the exotic Eastern influences.
Details of this exhibition can be found here, but must warn you that it is held all the way in Uzbekistan!