The vouchers can be redeemed till the end of March 2021, at all Heritage Malta gift shops, which you can find at sites and museums. However, they cannot be redeemed online.
What’s more, during the month of December, the Ħal Saflieni Hypogeum will be everyday, including weekends, from 9am till 5pm. All visits are conducted in strict adherence to public health regulations, related to the COVID-19 pandemic.
Get your hands on tickets to the Hypogeum from here.