Here are the books I read for this challenge:
The Netherlands - Just One Day by Gayle Forman
France - Chateau of Echoes by Siri Mitchell
Germany (German author) - The 13 1/2 Lives of Captain Bluebear by Walter Moers
Vatican City - The Vatican Diaries by John Thavis
Denmark - The Elephant Keepers' Children by Peter Hoeg
Belgium - Europe on 5 Wrong Turns a Day by Doug Mack
Switzerland - The Jane Austen Marriage Manual by Kim Izzo
Italy - Beautiful Ruins by Jess Walter
Spain - Following the Sun by John Hanson Mitchell