If you’re after a day-trip destination, we’ve got a couple of suggestions. Sitting 30 miles away, Rhens is worth the drive. Ehrenbreitstein Fortress ought to be high up on your list here. Stolzenfels Castle and Marksburg Castle are must-see attractions too. Don’t forget about Trier either! Just 30 miles away, Porta Nigra, Arena Trier and Cathedral of Trier are essential stops here.