ATHENS, Greece -- Monuments on the Acropolis Hill in Athens will close early due to a heat wave in Greece that saw temperatures reach 42 degrees Celsius (107.6 degrees Fahrenheit).

The site will close to the public on Monday at 2:00 p.m. (1100GMT), and return to regular summer opening hours on Tuesday, from 8:00 a.m. to 8:00 p.m. (0500-1700GMT), the Culture Ministry's association of employees at ancient sites told the AP.

Municipal authorities in Greek cities are on alert, providing air-conditioned halls for the public, while the government's Civil Protection Agency advised elderly Greeks to remain indoors until evening hours.

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