RheinMainCard

While in the Rhine-Main region of Germany, visitors can get two days of free public transportation as well as discounts at many sites and on activities with the RheinMainCard (www.frankfurt-rhein-main.de/en/Information-Planning/RheinMainCard). Cities that can be visited with the card include Frankfurt-am-Main, Mainz, Bad Homburg and Offenbach.

For an individual traveler, the RheinMainCard costs €22 (near $27). A group card, good for up to five people, costs €46. The card is valid for two days from date of purchase. On the website, click on “Points of sale” for a list of offices selling the card.