online art gallery??

what exactly ? links or what ?

Nice try but that would be spamming

Exactly i need history or detail about any famous artist painting..

Try Wikipedia... or the painting's respective museum website where each painting is currently held....

If you're really willing to create an online art gallery for art to sell then you need more then an arbitrary set of possible spam links... from some possible conspirator accounts. Also, you'll literally need a few million dollars (at least) and at least a Masters degree in Art History or Art and Museum Studies.

If you want to create a silly website collection of fine art images where museums and individuals actually still own each work of art? Then you're going to get a lot of legal take down notices as you'll likely be ending violating a lot of countries' copyright laws.