Machynlleth, sometimes referred to informally as Mach, is a market community, community and selecting ward in Powys, Wales and within the historic borders of Montgomeryshire (Welsh: Sir Drefaldwyn). It remains in the Dyfi Valley at the crossway of the A487 and the A489 roads. At the 2001 Census it had a population of 2,147, rising to 2,235 in 2011. Machynlleth was the seat of Owain Glyndwr's Welsh Parliament in 1404, and because of this cases to be the "ancient capital of Wales". Nonetheless, it has never ever held any official acknowledgment as a capital. It obtained city standing in 2000 as well as 2002, yet was unsuccessful. It is twinned with Belleville, Michigan. Machynlleth organized the National Eisteddfod in 1937 as well as 1981.