It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
This image was acquired from
Keywords from Image Description:
Almeida Jnior Saudade Longing Google Art Project. Saudade by Jos Ferraz de Almeida Jnior Tile set available Tile set Almeida Jnior Saudade Longing Google Art Project Gigapixel images from the Google Art Project Google Art Project works in Pinacoteca do Estado de So Paulo Google Art Project works by Almeida Jnior Paintings by
Page 2017 Free-images.com. All images are Public Domain