With our daughter soon starting school, any month long trips will have to take place in the summer holidays and realistically we probably won't be able to go away for a month until August 2028 at the earliest when she'd be 6 (7 in the December).
A few ideas I'm playing around with are:
Borneo and Panang.
.
Azores
I'd also like to do Ecuador/Galapagos Islands but she may need to be 8/9yo for a trip like that.
Would also consider other parts of South America (heard Columbia is good too in August).
What do people recommend?