I like CR33D's idea, So here are some maps I liked.

[Google13]

I though looking at new maps for the Lovenest was a pretty good idea, so I went looking myself and though these maps were pretty cool.

http://tf2.gamebanana.com/maps/73575
http://tf2.gamebanana.com/maps/56057

[HausOfJoel]

I though looking at new maps for the Lovenest was a pretty good idea, so I went looking myself and though these maps were pretty cool.

http://tf2.gamebanana.com/maps/73575
http://tf2.gamebanana.com/maps/56057

I really like these maps, especially the aerospace one.

[Balubish]

Banana looks cool.
cp_corporation_b3 I've played. quite nice game map.