In the books
In the Song of Ice and Fire novels, the Sea of Sighs is in the same location, in what is known as the Lands of the Long Summer. The 'demon road' from Volantis runs along its northern shore, but the road is considered cursed and few dare to use its perils to reach Slaver's Bay to the east, most preferring the sea route south around Valyria itself.
It is not known if the Sea of Sighs existed before the Doom of Valyria, or was created during the volcanic tumults of that time.
Seas of the Known World
|Lesser and Inland Seas:|
|Regions and Geography:||
Andalos . Braavosian Coastlands · Hills of Norvos · The Flatlands · Disputed Lands · Orange Shore · Golden Fields · Forest of Qohor · The Axe · Valyrian Peninsula · Dothraki Sea · Mother of Mountains · Lhazar · Slaver's Bay · Black Cliffs · Yaros · Ghiscar · Ghiscari Strait · Red Waste · The Footprint · Yi Ti · Shadow Lands
|Rivers and Lakes:|