The spawn is in a forest biome. Turn to your right and cross over the river to get to the desert. Continue just straight ahead crossing over the desert for a while. Then after a little while you will reach the two desert temples.
There are literally just like 7 blocks between each temple and they are facing the exact same direction. Both of the two chests got great treasured to be looted.
To loot all the treasures go to the center in each temple and then destroy the orange and blue colored blocks. Then drop down to the bottom (but avoid the pressure plate as it will trigger some hidden TNTs) and there you will find four chests.
Here is a list of all the items you will find in the chests:
- 7 gold ingots
- 4 iron ingots
- 2 emeralds
- 4 diamonds
- 23 bones
- 18 rotten flesh
Two Desert Temples Seed: 738789875