Professor in HRM Stefan Tengblad recommends a visit at the Garden Society of Gothenburg
The Garden Society of Gothenburg, "Trädgårdsföreningen", was founded in 1842. Today the garden is open to the public, providing recreation and togetherness for everyone living or visiting Gothenburg. It is described as a "A sea of green at the heart of the city", which is very true being located right next to downtown.
When you visit you can enjoy a coffee ("fika") at the Rose Café, which is located by one of the largest rose gardens in Northern Europe. Other famous garden designs can be found, such as a Woodland area created by Piet Oudolf as well as a shop where you can buy seeds for planting at home.
Other "smultronställen" that Stefan recommends are:
A boat trip out to "Nya Elfsborgs fästning"
Taking a look at the historical ship "Ostindiefararen"
Or go for a stroll in one of the oldest neighborhoods in Gothenburg, Haga