Horse Gate

"Two giant bronze stallions rear over the entrance to the city, their hooves meeting in the air to form an arch. The famous Horse Gate."

- Jorah Mormont The Horse Gate is the entrance to the ancient Dothraki city of Vaes Dothrak. It is composed of two stone horses, creating an archway by the conjoining of the horses hooves.

Season 1
Daenerys Targaryen and Khal Drogo enter Vaes Dothrak with his Khalasar via the Horse Gate, along with Viserys Targaryen and Jorah Mormont, for the birth of Daenerys' child.

A wine merchant that tries to kill Daenerys and her child, by poisoning, is punish by being dragged along the back of a horse, naked, whilst the rest of the Khalasar rides. His route takes him through the Horse Gate and out of Vaes Dothrak, as Khal Drogo proceeds onto Lhazar.

Season 6
Daenerys presumbly enters Vaes Dothrak through the Horse Gate, for the Khalar vezhven to decide her fate with the Dosh khaleen.