Radolfzell was developed out of a monastery founded in 826 AD as a "cell" under Bishop Radolf of Verona.
The tourist information office is located at the train station (Bahnhofplatz 2). It's open Mo-Fr 9.00 - 18.00 and Sat 10.00 - 13.00.
Radolfzell has no commerical airport. The closest airports are:
Zurich Airport (Switzerland). By car slightly over 1 hour to Radolfzell. By train 1.5 to 2 hours to Radolfzell.
Friedrichshafen Airport (Germany). By car 1 hour to Radolfzell. By train 1 to 1.5 hours to Radolfzell.
Stuttgart Airport (Germany). By car 2 hours to Radolfzell. By train 2.5 to 3 hours to Radolfzell.
Radolfzell can easily be reached by train, as it is an important railway junction in the Bodensee area.
By bus: there is a bus network  through the city. All buses leave from the central bus station next to the train station.
By taxi: Taxis are normally stationed outside the train station.
By foot: Radolfzell is pretty small and you can probably walk anywhere you want to go. The old town/pedestrian zone is compact and easily walkable.
Radolfzell city museum, Seetorstraße 3 (in the open area directly across from the train station). Tue-Sun: 10-12.30, 14-17.30. Thurs open late until 20.00. Mondays and holidays closed. Adults € 6, studends € 4, under 14 years free.
Minster (Münster Unserer Lieben Frau). The relics of Radolfzell's patron saints (St.Theopont, St.Senesius and St.Zeno) are kept in this church.
Hang out at the lake, (Right beside the train station. Use the underpass under the tracks to get to the lake). The lakeside has walking and cycle paths, a couple of restaurants, a beer garden, and a harbour.
Beach, Strandbadstrasse 100 (on the Mettnau peninsula). Adults € 2, children 6 years and older € 1.30, under 6 free.
Carnival (Zeller Fasnet). The Radolfzell carnival takes place in the week leading up to Ash Wednesday, and includes events such as: "Hemdglonkerumzug" on Thursday where everyone dresses up in nightgowns and parades through down to chase out the ghosts of winter; a big street parade on Sunday; a "fool's fair" in the market place on Monday; burning of the giant straw Carnival man to finish things off on Tuesday.
Hausherrenfest. The third weekend in July is the feast of the patron saints of Radolfzell. There's a big festival at the waterfront on the weekend, and Monday morning citizens of Moos (across the lake) paddle over in flower-decorated boats for their annual pilgrimage.
Christmas market, . The Christmas market is the first weekend in December. The main market place is filled with stalls selling mulled wine and food. There is live music.
Market, (main marketplace). 07:00 - 14:00. Market days are Wednesday and Saturday.
Downtown shopping, (old town). The old section of town, in the pedestrian zone, is full of stores.
Seemaxx factory outlet, Schützenstrasse 24, . Mon-Sat: 10:00 to 19:00.
Sonnenklar bistro, Josef-Bosch-Str.9, ☎ +49 7732-4505. 11:30 - 14:00. This bistro in the back of the Sonnenklar health food store serves organic, vegetarian meals. The menu changes every day. There are always about 5 or 6 options. approx € 7.
Hotel am Stadtgarten, Höllturmpassage 2 (downtown in the pedestrian zone), . Single rooms € 79 to € 90, double rooms € 119 to € 150.
The Black Forest (Schwarzwald) in Germany is about 2 hours away by train or 1.5 hours by car.