Hey Jenn!

Visiting the tower (or any ATC facility) can be an excellent learning experience (not to mention that they have the best view of the airport!).

Each facility has a different policy about visits, often dictated by the local manager. Some are going to be better about it than others, but I've never been turned away from any tower (even class B) as long as I did a bit of background work before hand.

Give the facility you want to visit a call and ask about the possibility of tours. Most facilities will have a public relations rep that can arrange the details. When you visit, make sure that you ask about pictures (some places don't like it) and be sure that you take your pilots license and photo ID (makes things easier).

Have fun! When you're there, ask the controller if there is anything that you can do to make things easier for them! I've found that by asking that simple question, local controllers can open a huge amount of info that makes life easier for you (such as how to obtain shortcuts, or make your own operation more efficient). Plus, they often take note of your tail number if you get to know them, which can result in some unofficial "favoritisim" from time to time.