Take the train to Homburg (25 minutes), where your Roman and nature discovery tour starts. You cycle on beautiful, well-paved bike paths along the Erbach stream to Schwarzenacker. Visit the interesting Roman Museum, an archaeological open-air museum with a beautifully landscaped baroque garden. Wander through excavated floor plans of ancient Roman buildings, streets and canals. Marvel at the rebuilt Roman buildings with wall paintings and underfloor heating, a temple replica and many replicas of columns and statues. Then you will meet “an old friend” by bike, the Blies, which you follow for 7 km before the cycle paths along the Würzbach show you the way. Take a break at the Würzbach pond, where the café and beer garden beckon. The Frohnsbachtal, Geißbachtal and Glashüttental with their ponds lead you to St. Ingbert, the fifth largest city in Saarland with around 37,000 inhabitants. Then you continue back to Saarbrücken on the best paved bike paths through the Gumbach Valley. Take a well-deserved break at the idyllic market square of St. Arnual, the oldest part of Saarbrücken. Marvel at the collegiate church of St. Arnual, a Gothic three-aisled basilica that was built around 1390, before cycling the last few kilometers along the tobacco mill and through the Franco-German Garden back to the hotel.