Where are Arenas?

I was reading the newbies guides (not that I'm a newbie, but there's sometimes things I missed -- like now).

Where are the Arenas that I heard about? I heard there was one in Ascalon; that they're PvP that's limited to players of some certain level (In Ascalon it's 10, so the article said).

Where else are they? And how do I get to them? (I stumbled into one once, early in one character's life, but I don't know where it was -- and I had left immediately, not wanting my level 4 to get Pwned by a horde of level 20's....).

I heard there was one in Lion's Arch... how do I get there? Is it the Boat thing?

There are now currently 4 Random team PvP arenas. The D'Alessio Arena was recently added that is accessible from Lions Arch, from the ferry. I'm not sure on the level restrictions for this one however...

The other 3 are as follows

Ascalon Arena (Level 1-10 requirement)... can be found from the Post-Searing Ascalon City.

Iron Horse Arena (Level 10-15)... can be found in Yak's Bend.

Fort Koga (Level 15-20)... can be found from the Henge of Denravi.

Of course, the Fort Koga arena is really meant for level 20 characters only.

I've never been able to play more than 1 round in the Iron Horse Arena, as not too many people even know about it yet, lol... but I imagine that if you're not at least level 13, you won't do well.

The Ascalon Arena, which I think is the most fun, is best played when you're at least level 6-7... higher if you're a warrior.

There is talk of a "Coastal Arena" or some such thing, where you can create your own teams of 4, rather than it being Random... perhaps this is what the D'Alessio Arena will turn into... I can't say for sure.

D'Alessio Arena could be accessed with Level 20 PvP Chars 2 days ago. Random Teams.