Explore Heidelberg, Germany’s oldest and most famous university town, on this private, guided, half-day sightseeing tour from Frankfurt. Enjoy personal attention while learning about the city’s history, culture and Gothic and Renaissance architecture. See some of Heidelberg’s most popular sites. Explore the famous ruins of the Gothic landmark Heidelberg Castle, complete with the world’s largest wine barrel, the Heidelberg Tun. Visit the oldest part of the city, the Altstadt, and marvel at the wonderful combination of old and new buildings, narrow streets, market squares and much more. Hotel pickup/drop-off included.