What to do when visiting a lab or a university for prospective application?

Question

In his famous and interesting article "Ten Simple Rules for Selecting a Postdoctoral Position", author Philippe Bourne states, in the 2nd point:

Rule 2: Select a Laboratory That Suits Your Work and Lifestyle

If at all possible, visit the laboratory before making a decision. [...]

I think that is definitively a good advice, not only for Post-Doc applicants, but for all applicants in general. But, what is the best way to arrange a lab visit?

What to do when you're there?

Whom to speak to? What to ask? What to do?

Answer 1

Two options I can think of:

1. Simply email the professor and arrange a visit.
2. Some programs will have lab tours during the recruitment/orientation programs, so you can try to arrange to meet the professor on that visit.