Young men and women cool off in a pool in a ruined warehouse in the southern Russian city of Rostov-on-Don on Friday, July 8. The pool has formed from a local spring in the buildings which dates to the 19th century, and are federally preserved monuments of architecture. (Reuters)

Young men and women cool off in a pool in a ruined warehouse in the southern Russian city of Rostov-on-Don on Friday, July 8. The pool has formed from a local spring in the buildings which dates to the 19th century, and are federally preserved monuments of architecture. (Reuters)