It was meant to be an event to สมัครสล็อตxo rival Crystal Palace's 1851 Great Exhibition.
In the summer of 1896, Cardiff launched the "Fine Arts, Industrial and Maritime Exhibition".
Despite having a 9,000-seater concert hall venue, an overhead railway and 800 specially commissioned exhibits, the six-month festival made headlines for the wrong reason - the death of a 14-year-old girl.
It's 125 years since Louisa Maud Evans fell into the Bristol Channel when an aeronautic display went horribly wrong.
Rosemary Chaloner, author of The Balloon Girl, is part of a group who mark the anniversary of her death each year.
She said: "These weren't hot air balloons with a basket as you might imagine seeing today, they were balloons with a trapeze bar and wooden seat attached beneath. A parachute was fixed to the balloon with a thin cord.
"They would fly between 5,000 and 8,000ft before jumping, trusting the parachute would detach from the balloon and open before they landed.
"Thousands of spectators had gathered in the exhibition's velodrome to see Louisa perform with world-famous French aeronaut, Auguste Eugene Gaudron, when the wind suddenly changed, and she was blown away from Cardiff and over the sea."