In the opening of the book "The Voyage of the Dawn Treader" the three main characters find themselves looking at a painting that slowly becomes real and they end up stepping/swimming through into a world of fantasy.

I vividly remember standing on the deck of the Sea Spirit as we cruised past this scene - a world almost completely monochromatic except for the vivid shades of ice blue and yet it feels like some fantasy world that doesn't really exist.

71°27'15.447" N 25°37'1.183" W