Urban HikingHiking in the Cities of Southwest Germany

Home to Germany's oldest university, a castle ruin and an old town, Heidelberg is a must-see. For a great view of all this, cross over to the north side of the Neckar River, where the 440m (1,450ft) Heiligenberg Hill offers a variety of trails. The Keltenweg, a circular walk, has a Celtic theme. It passes a defensive wall, monastery ruins and a medieval well. The Philosophenweg (Philosopher's Path), made famous by poets and thinkers, winds along the southern slope of Heiligenberg Hill. It passes gardens planted with exotic species such as Japanese loquat, Arizona cypress, Spanish broom and Portuguese laurel. A 4-km / 2.5-mile path links the Philosophenweg, the steep Schlangenweg alley, the Old Bridge and the main street of Heidelberg's old town.

The jewellery-making city of Pforzheim takes urban ecological tours seriously, with eight circular walks to choose from. One of the best leads from the Rodgebiet area in south-west Pforzheim to the village of Dillweissstein, known for its lime trees. Walkers will learn about the trees that line the streets, providing shade and clean air. Locals love their gardens, which provide food and shelter for wildlife even in the most densely populated areas. Then there is the Hinteren Tal, a wetland with rare animals and plants. Walk any of the trails with a guide or on your own.

The capital of Baden-Württemberg is Stuttgart. One of Germany's greenest cities, it is surrounded by hills, forests, orchards and vineyards. In fact, a quarter of the city is green. No wonder it is a great place for urban hiking. Unique are the 'Stäffele', the 400 or more steep stone stairs that lead up and down the hillsides. Join a guided 'Stäffele' tour and be prepared for a workout. Enjoy the view over the vineyards and the city - you have earned it!

If a leisurely stroll sounds more appealing than a hike, then Constance, the largest city on Lake Constance, is the place for you. The flat, easy 8-km / 5-mile Uferweg (shore path) starts at Imperia, the iconic statue at the entrance to the harbour. From here it heads through the city park to Horn Beach, known to locals as 'Hörnle'. Although the path is busy during the high season (May to September), it is quiet the rest of the year. In autumn and winter, the shimmering lake and distant mountains create a magical scene.