Estonian completed first of two attempts to navigate narrow ribbon, 160 metres long and 120 metres high, near the city’s famous Gyeongbokgung palace on Thursday

The lunchtime crowds drifted slowly back to their offices along central Seoul’s main boulevard, heads up and phones raised to the sky.

High above, a narrow ribbon ran between the Koreana hotel and the Dong-A Media Center, a few hundred metres from the capital’s famous Gyeongbokgung palace and Gwanghwamun square.