I need help finding my Husband an ideal gift?

I love my husband with all my heart and I wish to make his birthday extra special. We have traveled the world, but we now live in the Congo and work for CAFOD he is an eye Specialist . He is very dedicated and is busy with cataract operations until May. I want to take him on Holiday, somewhere special. Out of Africa, maybe to Northern Europe or America. Can anyone recommend somewhere special it is his 40th.I need help finding my Husband an ideal gift?
I'd recommend Iceland, go between Sept and November for a chance of catching the aurora borealis (the Northern Lights), stunning. It's a stunning country.I need help finding my Husband an ideal gift?
hookers are a good gift to give