Yes, you can travel to other Schengen countries with a Luxembourg Visit Visa. A Luxembourg Visit Visa is a Schengen Visa. It permits traveling to all 26 Schengen countries, as long as you follow the 90/180-day rule. Luxembourg needs to be your primary destination, but you can visit nearby countries like France, Germany, and Belgium while you're there. Remember to keep copies of your itinerary and lodging confirmations for each country. Border officials in the Schengen Area can still ask for these documents.