Sonic Adventure 2: Battle is a fantastic looking 2002 title. The textures are sharp, the character models are well rendered, and the frame rate runs at a smooth 60fps.

Three levels in particular impressed me the most in the game. Here's a quick rundown on each those levels:

Metal Harbor

Description: This entire level is surrounded by beautiful crystal clear water, stunning looking clouds, and tropical islands in the vista. The flock of seagulls are a nice touch.

Pyramid Cave

Description: This level features the best looking textures in the game. Approximately 90 seconds into the level you'll be treated to a breathtaking view of a pyramid.

Final Rush

Description: This level features the best looking background in the game.

The Winner: This is hard to call, because each of those levels excels in something the other levels doesn't, so I'm just going to declare Metal Harbor my favorite looking level in the game, only because I tend to like water based levels better than desert and space based levels.