You are free to add a link to Guide-Spain.com. At every page from http://www.guide-spain.com you will find section with HTML code you can use for link to the currently loaded page.
For example, at our home page, on page bottom, you will find:
Just copy HTML code below the label "Use next HTML" and paste it into the HTML of your page.
If you use WYSIWYG editor you can copy and paste directly the link below "to have this result" label.
Some of sites that are not related to Spain will be added in "Link Partners" page.