Where Have All The Pilgrims Gone?

Pilgrimage: a person who travels to a holy place for religious reasons.

There are many holy places in the world. I do not know all the places that for me are holy. I do not know of any "religious" reason why I would do anything. But I feel it is necessary for me to go on a pilgrimage of sorts.

I would suppose that the purpose of a pilgrimage is to attain either some sort of spiritual enlightenment or cleansing. Because I am not sure of any specific religious associations for myself, the purpose of a pilgrimage is elusive. Yet, the prospect of travelling to some place that I would deem "holy" upon visiting to attain some sort of spiritual cleansing or enlightenment seems necessary and therefore important.

In the past I have considered going to the theatre a sort of pilgrimage. A journey we take for spiritual purposes. I have taken many theatrical pilgrimages, but I think it is time for something more of the world itself, instead of artistic recreations.

The questions is:
Where to go?