The City of Asshai

Strayed away at the far side of the world, the port city of Asshai, also known as Asshai-by-the-Shadow is the most eastern city in the world, for all the people of Westeros know. In the Shadow Lands beyond Asshai, the colorless ghost grass fills the region making that mysterious mountain range glow under the moonlight.
The city of Asshai is a place of magic, where the people are thought to have extended knowledge of the arcane. They are dark skinned, thought to be "spawns of shadows" from the rest of the folk. It is unclear though what has preserved their magic over the years. Do they keep dragons locked in dungeons? Are there any dragons still living in the lands beyond Asshai? Or is it that the people of Asshai have found some other way? How do they keep the ghost grass from destroying the
Lady Melissandre, a shadowbinder of R'hllor is from Asshai.
Mirri Maz Duur, the maegi who performed blood magic, was also known to have been trained in Asshai.

One thing is for certain: the City of Asshai thrives with magic. Blood magic. Shadow magic. Fire magic. Air magic.

Asshai is known for dragonglass, amber and gemstones.