Photo taken on June 1, 2018 shows a windmill library in Astypalaia, Greece. The windmill library created in 2011 houses over 2,300 foreign language books donated by tourists and locals. (Xinhua/Lefteris Partsalis)

Photo taken on June 1, 2018 shows a windmill library in Astypalaia, Greece. The windmill library created in 2011 houses over 2,300 foreign language books donated by tourists and locals. (Xinhua/Lefteris Partsalis)

Photo taken on June 1, 2018 shows the owner of the windmill library Stella Papadopoulou in the library in Astypalaia, Greece. The windmill library created in 2011 houses over 2,300 foreign language books donated by tourists and locals. (Xinhua/Lefteris Partsalis)

A tourist takes a look at the windmill library in Astypalaia, Greece on June 1, 2018. The windmill library created in 2011 houses over 2,300 foreign language books donated by tourists and locals. (Xinhua/Lefteris Partsalis)