In 2005, the city of Las Vegas celebrated its... 100th birthday.
There was an enormous party, and, of... course, a birthday cake.
But this was not an... ordinary cake - it was the... world's largest birthday cake!
A thousand people worked for... three days to... make it.
They baked 30,000 small cakes and stuck them together by... icing.
The cake was 31 m long, 15 m wide, 50 cm high and weighed more than... 50 tones!
It was big enough... to feed half a... million people - that's one piece of cake each for every person of... Las Vegas.