2 Best Sights in Tübingen, Heidelberg and the Neckar Valley

The majestic silhouette of this massive castle is visible from miles away. The Hohenzollern House of Prussia was the most powerful family in German history. It lost its throne when Kaiser William II abdicated after Germany's defeat in World War I. The Swabian branch of the family owns one-third of the castle, the Prussian branch two-thirds. Today's neo-Gothic structure, perched high on a conical wooded hill, is a successor of a castle dating from the 11th century. On the fascinating 45-minute castle tour you'll see the Prussian royal crown and beautiful period rooms, all opulent from floor to ceiling, with such playful details as door handles carved to resemble peacocks and dogs. The restaurant on the castle grounds, Café Restaurant Burg Hohenzollern, offers choices from vegan up to rump steak along with pastries from  the local confectioner,  and there's an outdoor beer garden in season. From the parking lot it's a 20-minute walk to the castle entrance; a shuttle bus is now included in the admission price, and there are English-language tours on request (or you can download the new free self-guided app). While it's better to buy a ticket in advance to ensure entry, you can buy one at the carpark for an additional €3 if they are available for the day.

A wealth of vintage toys, model trains, and vehicles, including motorcycles, awaits children of all ages. This private collection, open to the public, includes Porsche, Ferrari, and Maserati race cars, an original 1957 VW Beetle, and a rare 1954 Lloyd. Ask a docent to start up the HO trains or one of the antique musical toys. Kids can ride one of the old pedal cars. There's also a small café and free parking.