It isn't a PHOTOGRAPH, but a phonograph (a record player) that is missing from 1877 AD. Go to 328 BC and climb the first building, and the phonograph is on the roof.
The Aztec Empire is where you get the sun stone piece on Time Tangled Island. It is 1519 AD the picture is a man with headdress.
you dont
@ the great wall...
inside a temple
The oracle is in the building on the hill on Time Tangled Island.
you find your self in the future(seconed time)
In "Time Tangled Island," you can find the gramophone in the 1920s area. It is located inside the house of the character named "The Inventor." You need to interact with the gramophone to play music and help solve the time-related puzzles on the island.
There are no horses, winged or otherwise, on Time Tangled Island.
The pumpkin head is in Time Tangled Island and you have to find it.
on time tangled island [vikings]
I don't think there is one.
The cave is located in 0831 AD.