Well as per the title it’s the first Sunday of the month and yes that means that the museums are free. New Year / New Resolutions get out and do more? 🙂

https://www.nantes-tourisme.com/en/museums-nantes

Which museums are included?

Last Days Of The Amazonie Exhibit

The Château has a lot about the history of Nantes, there’s also the “Amazonie” expo that is finishing up on the 19th of this month.

While you’re at it why not take a look at the Chateau Advent Calendar or has it already finished? 🙂

Chateau Advent Calendar 2019