Members of Triko Circus Theater perform aerial hammock dance by hanging from the Mladost Bridge over Sava River in Zagreb, Croatia, on June 11, 2020. (Borna Filic/Pixsell via Xinhua)

Members of Triko Circus Theater perform aerial hammock dance by hanging from the Mladost Bridge over Sava River in Zagreb, Croatia, on June 11, 2020. (Borna Filic/Pixsell via Xinhua)

Members of Triko Circus Theater perform aerial hammock dance by hanging from the Mladost Bridge over Sava River in Zagreb, Croatia, on June 11, 2020. (Borna Filic/Pixsell via Xinhua)

Members of Triko Circus Theater perform aerial hammock dance by hanging from the Mladost Bridge over Sava River in Zagreb, Croatia, on June 11, 2020. (Borna Filic/Pixsell via Xinhua)

Members of Triko Circus Theater perform aerial hammock dance by hanging from the Mladost Bridge over Sava River in Zagreb, Croatia, on June 11, 2020. (Borna Filic/Pixsell via Xinhua)