Denmark and Iceland

The Tornio/Haparanda course is the only two-nation golf course in the world, residing on the border of Finland and Sweden. Playing 18 holes means crossing the border 4 times.

From the 700s to the 1200s, Baghdad was an Intellectual Center unrivaled in the world. It's House of Wisdom studied mathematics, astronomy, medicine, alchemy and chemistry, zoology, and geography.