US tightrope walker Nik Wallenda has successfully completed back-to-back high-wire walks above the city of Chicago, watched by thousands of people, the BBC reports.
The 35-year-old achieved the two skyscraper crossings without a safety net or a harness.
He first walked up a steep incline between buildings either side of the Chicago River.
Then, blindfolded, he crossed between the two Marina City towers.
It took him six minutes 52 seconds to complete the first stage 500ft (152m) above the ground – in winds that were gusting at up to 25mph (40km/h).
He then completed the 94ft between the two Marina City Towers in one minute 17 seconds.
The stunts were televised with a 10-second delay in case he fell.
On the ground, thousands cheered Mr Wallenda – a seventh-generation tightrope walker.
