LAN Parties 

They are very famous for people who like video games and would like to have a really good connection speed. Last year it was about 50Gb's/s .

DreamHack is the largest LAN party and computer festival in the world. It's held twice annually in Jönköping, Sweden. Last year were more 
than 2million of visitors 

It is a local area network gathering with  life concerts

 and competiotions in digital art  and E-Sports.