Suijin

Suijin RC2

This is my favorite map of all time, I regularly queue just Suijin

The separation of the main fighting areas and flanking routes is amazing, plenty of room for snipers but lots of cover

I love the design and greenery of the map

Being able to travel on the roofs and not having as many "invisible ceiling" walls as other maps is refreshing

I love this map
the map is by far the most beautiful maps in the game it was reworked for KOTH witch is a bit broken
No issues with framerate as someone had mentioned, balanced arena map and plenty of space for fighting.
The way the map was suppose to be played. While arena is not as popular as koth, this map works a lot better for arena. The current version has not had the optimization updates though, so framerate issues will occur frequently.
Arena. The real version of this map.

As one of the larger Arena maps, it has room for very varied gameplay space that caters to each class. Plus, this map is gorgeous.

It does have some issues with framerate though.