Glamour in Glass, by Mary Robinette Kowal, 2012
This is the sequel to Shades of Milk and Honey. It follows Jane and Vincent on their honeymoon.
Vincent has an old friend who lives in the Flemish countryside. He and Jane want to consult him on a question of glamour, because they're trying to figure out how to make a glamour portable. So they take their honeymoon to France/Belgium, and they get entangled in local politics (and not-so-local: the Bonapartistes are still active).
This is a great read, and if you enjoyed Shades, you'll enjoy this.