Time Out says
Often described as the Swedish capital’s playground for adults, no trip to Stockholm between May and September is complete without a visit to the mother of outdoor party spaces, Trädgården. Sprawling beneath a giant concrete bridge, it’s home to a massive courtyard dance area, a burger shack, table tennis and boules areas and a jigsaw of smaller terraces and bars that burst into life during peak season. At Trädgården, when the sun is shining, Stockholmers rip out of their stereotype as a closed and shy bunch, and embrace connecting with strangers. Book ahead for the popular Daytime Sessions, which draw respected EDM, garage and house DJs. During colder periods of the year the venue scales down to a two-floor techno and electro club called Under Bron (Under the Bridge), with a more underground feel.
Time Out tip: Entry is often free before 8pm; check Trädgården’s social media for the latest information. The vibe here is very casual, but beware temperatures can drop quickly if you’ve turned up in your favourite summer shorts.