Multiple categories on one page

Hi
I would like to show a all posts from each of 3 different posts on 1 page. This is so that the page is automatically populated with the posts from each category.

i.e
Category 1 – location 1 events
Category 2 – location 2 events
Category 3 – location 3 events

Page – location 1 events + location 2 events + location 3 events

I hope the above is clear, can anyone point me in the right direction with this.

Thanks in advance