According to the government measures implemented to the Greek museums from September 13 2021 until March 31 2022, admission to the National Historical Museum is allowed to visitors with a covid-19 vaccination certificate or with a proof of recovery (at least six months). Unvaccinated visitors are obliged to have a negative rapid test taken 48 hours ahead of visit.
Verification on admission via the Covid Free app. Demonstration of the passport is also required.
The use of mask is mandatory to all the areas of the NHM.