Highly recommend this style of celebration. My partner and I have made a habit of some form of interesting travel for major birthdays---Everest (just base camp)

Highly recommend this style of celebration. My partner and I have made a habit of some form of interesting travel for major birthdays---Everest (just base camp), Svalbard, caving in NZ, etc. Other years just a local trek or hillclimb. It doesn't need to be expensive (the above had high flight costs, but the remainder was below sustenance spend if we were at home). The goal is to do something well removed from normal daily experience as it creates a nice memory anchor for that point in time.