Hop aboard your luxury vehicle in central Frankfurt and travel southwest to Wiesbaden, your first destination of the day. The capital of the German state of Hessen, Wiesbaden is known for being a historical spa town, with a collection of hot springs scattered around its center.
Take a stroll around the sophisticated little town with your guide, admiring the elegant Belle Epoque villas and historical Gr□nderzeit houses that line Wiesbaden’s leafy promenades. Stop outside Kurhaus  the Art Deco spa building that houses Wiesbaden Casino  and hear tales about the famous folk who have paid visits to the city’s glamorous gambling den.
Another popular Wiesbaden attraction is Neroberg Mountain, an 800-foot (244-meter) hill lined with lush forests and parkland. Ride up the hill on the Neroberg Mountain Train  Germany’s oldest water-powered railway  while soaking up spectacular views of Wiesbaden. Stop for lunch (own expense), and then pay a visit to the Russian Orthodox St Elizabeth Church with your guide. Hear of the Duke Adolf of Nassau who commissioned the church to be built as a memorial to his wife, and admire the extravagant d□cor inside.
Travel down the hill on the Neroberg Mountain Train, and then board your vehicle for your short journey to Mainz  an old city just south of the Rhine River. Stretch your legs on a walking tour, taking in the ornate Baroque churches, half-timbered houses and pretty cobblestone alleyways that typify Mainz city center. Pass Gutenberg Museum  home to a staggering collection of printing artifacts  and then visit St Stephen’s Church to see its stained-glass windows, designed by Marc Chagall.
Stroll to St Martin’s Cathedral for a look inside, admiring its Romanesque architecture and collection of religious works of art. After exploring, return to your vehicle for your journey to Frankfurt, finishing your tour at the start point.