The old city took on its present appearance in the 17th and early 18th centuries when mediaeval houses were gradually replaced by baroque buildings. The main landmark is Zofingen's town church, with Romanesque and Late Gothic sections. Archaeological digs have revealed the remains of previous buildings: the first foundation walls were erected in about 600 AD. Many historical buildings are now resplendent after renovation work in recent years. One hub of all events in Zofingen is certainly the quaint and unique old town, often ranked among the loveliest in our country.
- Heiternplatz – a superb venue for open-air events, with views of the Old Town, the Alps and the Jura.
- Manor on a former Roman country estate – the mosaic floors of what was Aargau canton's largest manor are freely accessible.
- Bio Marché - Switzerland's largest organic produce fair (June).
- Heitere Events Week - festival atop Zofingen's "own" Heitern hill, with Swiss and foreign artists (August).
- Powermann - world championship, known as the world's toughest duathlon (September).
- Christmas market to delight all the senses - Advent mood in the Old Town (December).