Philip Kennicott visited New Gourna and Cairo in Egypt and Diyarbakir in Turkey to explore historic cooling techniques. Sima Diab photographed them in Egypt. Dec. 28 at 6:30 a.m.

These make Lake Salda among the best places in Turkey for nature photography and hiking. “The best season to visit Salda is spring and early summer,” notes Hasan Gülday, a tour guide based in ...