3 Best Sights in Heidelberg and the Neckar Valley, Germany

The stunning futuristic architecture of this museum is an enticement to enter, but the equally stunning historic and futuristic vehicles inside are the main attraction. Visitors are whisked to the top floor to start this historical timeline tour of motorized mobility in the 1880s, with the first vehicles by Gottlieb Daimler and Carl Benz. Other museum levels focus on a particular decade or category of vehicle, such as trucks and buses, race cars, concept cars, and future technology, including autonomous driving. Historic photos and other artifacts line the walls of the circular walkway that links the levels.  There's a huge gift shop with all kinds of Mercedes-Benz–branded items and a new-car showroom you can muse over appealing models that are sold in Europe but not in North America. If all that technology makes you hungry, enjoy a full meal at Bertha's Restaurant, named for Bertha Benz, which serves farm-fresh local fare, or a quick bite in the Bistro or Deli.

In the center of the Porsche factory complex in the northern suburb of Zuffenhausen, the architecturally dramatic building expands outward and upward from its base, like a sports stadium. Inside is a vast collection of legendary and historic Porsche cars including racing cars, nearly 1,000 racing trophies and design and engineering awards, and several vehicles designed by Ferdinand Porsche that eventually became the VW Beetle. It is astounding how some 1930s models still look contemporary today. The museum includes a coffee shop and the Boxenstopp bistro, ideal for families, open during regular museum hours. There is also the sophisticated Christophorus restaurant, regarded as the best American-style steak house in Stuttgart, open Tuesday through Saturday until midnight. The gift shop sells some Porsche-branded logo clothing, but mostly miniature collectibles. Stand under the special "cones" on the upper level to hear the different engine sounds of various Porsche models, and try out the interactive "touch wall" timeline to explore nine decades of automotive history. Factory tours are available with advance arrangements.

A former church converted to house this fascinating documentation of packaging and package design of brand-name products. Representing the years 1800 to the present, historic logos and slogans are a trip down memory lane. The entrance is in a courtyard reached via an alley.