The St. Jakobshalle arena is used for both indoor sports and concerts, but probably most famously known as the host of the Swiss Indoors Men’s Tennis Tournament.
Tournament Guide by Tennis Tripper
Swiss Indoors : Tournament Information
The Swiss Indoors is the biggest tennis tournament in Switzerland and is part of ATP Tour 500. It was founded in 1970 and the longest reigning champion is Swiss National Roger Federer who’s won the tournament 10 times as of 2020.