How to visit The Louvre Museum for free:
Every Friday from 6 p.m. to 9:45 p.m., admission to the museum is free for visitors under the age of 26 regardless of country of residence.
Admission is free for all visitors on the first Saturday of each month from 6 p.m. to 9:45 p.m. and on Bastille Day (14 July).
Free for visitors under the age of 18.
There are more cases when the admission could be free but these are the most useful. - 3 hours ago