3. INmusic Festival
Where: Isle of Youth, Trešnjevka Island & Univerzijada Island, Croatia
When: June 22nd-June 24th
Why you should go: Three days, three separate islands, three-times the party... and it's not even on the ocean. Smack on Lake Jarun, this fest has hosted the likes of The Black Keys, Massive Attack, Sonic Youth, and the Pixies, among others. The concerts are held at the so-called Isle of Youth. The other two land bodies, Trešnjevka and Univerzijada (bless you), host attendees, who sleep there in tents; volleyball, rollerblades, mini golf, kayaking -- even yoga -- are provided. Oh, and don’t worry, there’s WiFi (because without Instagram, it’s like it didn’t even happen).