Tower of Dawn- Sarah J. Maas

The search for allies extends to a new land in the sixth book of the #1 bestselling Throne of Glass series by Sarah J. Maas.

Chaol Westfall and Nesryn Faliq have arrived in the shining city of Antica to forge an alliance with the Khagan of the Southern Continent, whose vast armies are Erilea's last hope. But they have also come to Antica for another purpose: to seek healing at the famed Torre Cesme for the wounds Chaol received in Rifthold.