TFC ships with 15 default maps, those are tracked here.

TFC has a long history of playing community-created maps in leagues, pickups, and public servers. There are many, many custom maps and in the interest of keeping the list here manageable, the plan is to start small and grow over time.

If there are any TFC maps that you would consider 'classic' in terms of being historically popular (whether in leagues, pickups, organized TFC or elsewhere), please reply below with the name (and a link, if possible).