Once the capital of the Mongol Empire, Karakorum is a fascinating place that is certainly worth a visit if you’re interested in learning more about the history and culture of the Mongols. Known to locals as Har Horin, the ancient city was visited by Marco Polo all the way back in the 13th century. Nowadays, however, the once-great city is but ruins, with endless sky and steppe in every direction. The main sight is the majestic Erdene Zuu Monastery, which was built out of the remnants of the ruined city in 1585; the plethora of stupas lining its long wall certainly do look incredible. One of the earliest surviving Buddhist monasteries in the country, Erdene Zuu has three beautiful temples, with lots of lovely statues and carvings. Besides this impressive sight, Karakorum has some smaller ruined stupas, buildings, and archaeological sites for you to wander around, although these are decidedly less spectacular.