Twenty of the most important Greek archaeological sites and museums will have Wi-Fi internet access as of this summer, the Greek culture ministry announced on Tuesday.

Archaeological sites with extended summer visiting hours will be shut down in the middle of the day as of Wednesday, and for as long as the heatwave lasts, the Ministry of Culture said yesterday.

Ticket revenues at Greece's archaeological sites and museums were up 55 pct in the eight-month period from January to August 2016, compared with the same period in the previous year, the Archaeological Revenues Fund reported on Monday.