epa13006244 Estonian slackliner Jaan Roose walks on a 2 cm-wide line 180 meters above the ground between the Palace of Culture and Science and Varso Tower, the two tallest buildings in Warsaw, Poland, 31 May 2026. The event is sponsored by an energy drink producer. EPA/PIOTR NOWAK POLAND OUT

epa13006239 Estonian slackliner Jaan Roose walks on a 2 cm-wide line 180 meters above the ground between the Palace of Culture and Science and Varso Tower, the two tallest buildings in Warsaw, Poland, 31 May 2026. The event is sponsored by an energy drink producer. EPA/PIOTR NOWAK POLAND OUT

epa13006240 Estonian slackliner Jaan Roose walks on a 2 cm-wide line 180 meters above the ground between the Palace of Culture and Science and Varso Tower, the two tallest buildings in Warsaw, Poland, 31 May 2026. The event is sponsored by an energy drink producer. EPA/PIOTR NOWAK POLAND OUT

epa13006241 Estonian slackliner Jaan Roose walks on a 2 cm-wide line 180 meters above the ground between the Palace of Culture and Science and Varso Tower, the two tallest buildings in Warsaw, Poland, 31 May 2026. The event is sponsored by an energy drink producer. EPA/PIOTR NOWAK POLAND OUT

epa13006242 Estonian slackliner Jaan Roose walks on a 2 cm-wide line 180 meters above the ground between the Palace of Culture and Science and Varso Tower, the two tallest buildings in Warsaw, Poland, 31 May 2026. The event is sponsored by an energy drink producer. EPA/PIOTR NOWAK POLAND OUT

epa13006243 People watch Estonian slackliner Jaan Roose attempt a highline walk on a 2 cm-wide line 180 meters above the ground between the Palace of Culture and Science and Varso Tower, the two tallest buildings in Warsaw, Poland, 31 May 2026. The event is sponsored by an energy drink producer. EPA/PIOTR NOWAK POLAND OUT