I am on a business trip to Heidelberg, Germany. I have two and a half days to spare. I would like to know how to arrange travel in Heidelberg and surrounding areas.

Take the cable car up to the medieval castle one day to have a look. If you buy a package ticket, it seems to be less than 10 euros. First, sit on the first floor and see the castle (if you buy only the cable car ticket instead of the package ticket, you will have to pay extra to enter the castle). Spend more time on it. Don’t Forgot to look at the legendary wine barrel. Then you can sit up to the top of the mountain. There are no scenic spots, but there is a forest with a better scenery where you can take a stroll.

The Heidelberg Old Bridge is very close to there, go and see it in the evening. The sun doesn't set until around nine or ten in the evening, so there's no need to worry about not seeing it too late.

Take a day to walk the Philosopher’s Trail and visit Heidelberg University in the old town. The main attractions in Heidelberg (Market Square, Holy Spirit Church, Knights' House and Elector Museum, etc.) are all concentrated in that area, and you can actually visit them in a short time. If you are interested, you can buy things along Hauptstrasse. You can buy very exquisite postcards at the Thalia bookstore (not the souvenir stalls around the church).

In fact, Heidelberg can be walked in one and a half days~ You can get a mini map for free at the DB business office in the train station (Hauptbahnhof), folded into a size of about 10cm × 5cm. There are maps of the main city, old city and station routes. As a reminder, if you are taking transportation instead of renting a car yourself, you must buy a ticket at the ticket vending machine at the station before getting on the bus. One-way tickets in Heidelberg are very expensive, so it is recommended to choose a weekly ticket or a daily ticket (Ticket 24, valid for 24 hours from the time of ticketing).

Before leaving, remember to take a photo with the printed horse (13 meters tall!) opposite the train station.