A man holds an umbrella Thursday as he and other tourists enters the ancient Acropolis hill during a heat wave, in Athens, Greece. In Athens and other Greek cities, working hours were changed for the public sector and many businesses to avoid the midday heat, while air-conditioned areas were opened to the public. “It’s like being in Africa,” 24-year-old tourist Balint Jolan, from Hungary, said. “It’s not that much hotter than it is currently at home, but yes, it is difficult.”