Heh. About time I do one of these aswell.
Favourite:
1. Tower of Spirits (Spirit Tracks)
2. Snowy Mansion (Twilight Princess)
3. Dark Hyrule Castle (Minish Cap)
4. Ice Temple (ALBW)
5. Temple of Droplets (Minish Cap)
6. Water Temple (Ocarina)
7. Dragon Roost Cavern (Wind Waker)
Least...