I visited Mongolia in 2003. It is a beautiful, unspoiled wilderness populated by friendly folks who will gladly invite you into their homes.
Although John Kerry used Ghengis's name in a negative reference, he was wrong to do this. (What do you expect from a C minus student?)
Genghis is a hero to Mongolians (Khan is just a title, like King, Regent, Tsar, etc.) There is a portrait of the great king (oftentimes a wall rug or woven tapestry) in many Mongolian homes and schools. Contrary to popular belief Genghis was not a barbarian. He brought many advanced and civilizing concepts to the world, and is responsible for many positive features in Western civilization. The Mongol Empire was the largest in history in total land mass.
A great book on Genghis, Genghis Khan and the Making of the Modern World.
I recommend it highly if are you interested in civilization and history in general, not just the Mongolians. One of the best history books I have read in the last year.
Why would I go to Mongolia? To catch the largest fresh water salmon in the world. The taimen. They grow up to 200 pounds. You catch them on a 9 weight fly rod with a top water bug.
Here's one of mine:

Sandra Day O'Conner and her husband had fished out of the same camp the year before I was there. When I was fortunate enough to meet her at the Southern Center for International Studies 40th anniversary dinner, SCIS we talked fishing for a bit. She was quite surprised to have that conversation.
Me and Sandra Day talking taimen fishin':

Here's more from National Geographic on taimen and my buddy who's saving them by getting Westerners to visit and catch them. We fished both the Eg and the Ur.
Dan Vermillion saving the taimen
Dan Vermillion still thrills to the memory of his first encounter with a fish of every angler's dreams.
He had reached the banks of the Eg River, amid the vast steppe of northern Mongolia, to check out travelers' tales of an enormous freshwater salmon. To his surprise, his Mongolian guide produced a freshly shot prairie dog, which he attached to a fishing line and threw in the river.
Moments later the water erupted to a massive strike mid-current. The fish got away—with a big chunk of prairie dog—but Vermillion was hooked for good.
Two decades later Vermillion, from Livingston, Montana, is behind an unusual ecotourism venture that aims to safeguard the taimen (Hucho taimen) by encouraging Westerners to catch it.
Dan's guide service if you want to go, and I highly recommend you consider it. It's not inexpensive, but is a heck of lot more fun and exciting than Europe.
Sweetwater Travel and Fishing
He and his two brothers also have camps in Montana, the Amazon, the South Pacific and the Pacific Northwest. Great guys that are excellent, patient, knowledgeable guides who also are great conversationalists. Dan's a bit on the Left, but is one of those guys with whom it is a pleasure to talk politics with, not a battle.