House Orien is one of the major dragonmarked houses in the world of Eberron, known for its Mark of Passage. This mark grants its bearers the ability to teleport themselves and others, making House Orien a leader in transportation and logistics. They operate a vast network of teleportation services, including the famous Lightning Rail, which connects cities across the continent. Founded by the ancient Orien family, House Orien plays a crucial role in trade and commerce. Their services facilitate the movement of goods and people, contributing significantly to the economy of Eberron. The house is also involved in various ventures, including courier services and the management of teleportation circles.