Luxembourg in 48 Hours: Castles, Chocolate and Hidden Corners Luxembourg may be one of Europe's smallest countries, but don't let its size fool you. Over the course of a weekend, you'll find a capital city packed with history, spectacular viewpoints, charming old quarters, and one of the most impressive castles in the region. This two-day itinerary combines the highlights of Luxembourg City with a scenic day trip to Vianden, making it perfect for a relaxed yet rewarding city