August 20 continued: The Heidelburg Castle is built of the distinctive local red rock. The castle has a deep moat and is heavily fortified. There are nine gates/doors at the entryway.

A group of Buddhist Monks are entering the castle. Very ecumenical

We had lunch in the lower city at this restaurant.

After our return to Frankfurt, the boat leaves the city, passing the financial district and the spire of St. Bartholamew Church.
The old and the new of Frankfurt.