Look at these glorious MOLESKINE journals. They come in 3 sizes ( pocket, and and the paper in the sketchbooks is thick, smooth and creamy. Watercolour books are also available as well as a multitude of lined notebooks.
Where are you off to next? - If you're travelling through multiple places, divide your journal into sections according to each city/area you visit - you may even want to create a title page, like this one, for each place.