It was, literally, planes, trains, and automobiles for me to get from San Francisco to Heidelberg. After some mixups with Air Berlin where they had eliminated a leg in my outbound itinerary and never actually told me, I changed my routing and instead of landing in Frankfurt and taking an easy train ride or hour-long shuttle, I ended up landing in Dusseldorf and taking 3 train connections without a seat. Fun times! 

But getting to Heidelberg was worth it. Once I got to the main station and on the bus taking me the short drive over to the Aldstadt area, I was pleased to find the routing takes you along the Neckar River. Once I got off the bus, I was in love.