For me the best is "clean floor" (snow on Folda, Ice on Okolnir, sand on Darashia), but I'll give you some other places.
1. Dream Courts Quest [many beautiful places when you have access to teleports in the castle]
2. Port Hope Tarantula's Lake (X on East part of city is hole which is the fastest to get there)
3. Way to Zushuka boss - many beautiful places!
4. Feyrist - many beautiful places too!
5. Issavi City
6. idk Folda or Vega, but probably Folda :D
I'll add some more in future, I have blocked add more screens :3