FRANKFURT MAIN RIVER, RIVER CRUISES
Overview: The Main River runs through Frankfurt am Main and merges into the Rhine River. The Main River is easy to reach as there are ramps leading down from the streets running parallel to the river. Cruises from the Main River to the Rhine can take half a day or a full day. You can check with the cruise ships docked on the river directly for tours. The boardwalk along the river is accessible and is mainly made of blacktop concrete. There are a few of the conic-shaped, flat cobblestones along the way.
There are a few tourist cruise ships on the Main River. These ships have ramps for wheelchair access. The Main
For more information, check out this quaint website: http://www.paulandgail.com/Travelogues/Danube1/danube1.html
Cost:
Accessibility: The boardwalk along the waterfront is accessible. There are ramps from the street from the Hauptbanhof area. Once you hit Old Town, the boardwalk is level with the streets. The cruise ships do offer handicap access via ramps.
Getting There: Depends on where you're staying but if you're within a few blocks, walk. It's beautiful.