The old town of Wintherthur is the cultural center of the city. This is also where most of the events take place. The sights include architectural gems such as:
- the main railway station (19th c.)
- the former weighing house (16th c.)
- town house (built by Semper)
- town hall (15th c.)
- town church (12th c.)
- the Judd Fountain in Steinberggasse (1996-97)
- Haus zur Geduld (17th c.), Haus zur Sonne (16th c.), Haus zum Warteck (19th c.)
Among the most important museums are:
- Art Museum with several locations
- Technorama
- Kunsthalle in the former Waaghaus
- Hegi Castle
- Mörsburg Castle
- Nature Museum
- Kellenberger clock collection
The rose garden contains hundreds of rose varieties. It is located on a hill and offers a view of the old town.