Tredegar Skatepark

Tredegar Skatepark is off the M4 just after Newport.

It's a mainly transition park and pretty gnarly. There's a proper pool modelled on the backyard pools where skateboarding began in California. Expect tight transitions, rough crete, and pool coping (where it isn't missing).
There's also a huge bowl area, with a nice line over a doorway which leads through to a street section with steep banks and kickers.
Lastly, there's a jump ramp section for getting big airs and grabs.