OoT
I liked the forest temple, and the spirit temple was alright,
but I LOVED the shadow temple. So atmospheric! So mysterious! So enthralling!
The visuals were tight and cool. I also like how everything was invisible/illusory.

i really liked the forest temple on OOT...but the shadow temple id have to say was cooler in hindsight.

Stone temple.

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"Men not cry for themselves, but for their comrades."

oot - wood temple
twilight princess - almost every temple

My favorite was the Water Temple from Ocarina of Time. It was just a great temple with the design and the illusion of being underwater seemed to blend seemlessly to me.

l thought the water temple from TP was challenging, and had the best graphics

hey what about the original temples from zelda that started it all old school, yet they did become redundant...

I liked the Earth Temple in Wind Waker.

The forest temple had a great atmosphere- although the newer Zeldas have greater looking temples, that one was the first to really blow me away (since the first three in OOT were cool looking but too quick and easy to leave a lasting impression)

the ice manor from TP, I spent like 1-2 hours looking at the surroundings x_x