PITTSBURGH (KDKA) — Pittsburgh was chosen from a short list of cities around the world to host the One Young World Summit.

More than 1,300 delegates from more than 180 countries have converged on our city until Sunday.

The delegates are all under 30 years of age and are here to discuss global problems.

The crowd erupted with applause when the Pittsburgh Symphony Orchestra played a song from the group Coldplay.

Celebrity chef Jamie Oliver was there, so was Live-Aid founder Bob Geldof. Singer Joss Stone performed as part of the opening ceremony at Heinz Hall.

Former President Bill Clinton answered questions from the delegates and during a discussion about equal pay for women, brought up the current race for president.

The night ended with a party for the delegates on the Roberto Clemente Bridge.

Some of the delegates are already impressed with Pittsburgh.

Choolwe Muzyamba from Zambia said he rode the bus around town to get a feel for our city.

“I think Pittsburgh is a beautiful city,” said Muzyamba. “It’s a friendly city to start with. It’s not crowded.”

More on the One World Summit

Watch & Listen LIVE