2 x 151 x 141041
Belapatfalva, Hungary
Guess the place!
Mortizburg Castle, Dresden, Germany.
Very good!
Galešnjak (Island of Love, Lover’s Island, Otok za Zaljubljene)
Correct!
I’ll skip my turn. Someone else can post a picture. 
First clue:
Square.
Piazza del Popolo, Rome, Italy.
Skip.
Wow that was quick!
Duly noted.
Anyone want to post a pic?
Guess the place!
Lake Powell, Utah, USA
Sorry, but no.
First clue: It's in the Southern Hemisphere.
That helped a lot.
The answer is : Rainbow Valley Conservation Reserve, Northern Territory, Australia.
And this is what it looks like most often:
Where’s all the water from the first photo?
Looks like the surface water layer is not permanent - it comes with rains, and goes.
If my answer is correct, next task is :
Rings any bells?
It’s Suncoaster’s avatar.
Please note, I do not know the correct answer.