Wales will host the International Rugby Board's (IRB) first ever Under-20 World Championship next year.
The tournament, from 6-22 June, will replace both the IRB Under-21 and Under-19 World Championships.
There will be 16 nations competing in the tournament, with games in Cardiff, Newport, Swansea and Wrexham.
"The IRB is delighted that Wales will host the first Junior World Championships next year," said IRB chairman Dr Syd Millar.
IRB Junior World Championship Wales 2008
Pool A - Cardiff: New Zealand, Argentina, Ireland, Tonga
Pool B - Wrexham: South Africa, USA, Samoa, Scotland
Pool C - Newport: Australia, England, Canada, Fiji
Pool D - Swansea: Wales, France, Italy, Japan