The Orient Express was the name of a long-distance passenger train originally operated by the Compagnie Internationale des Wagons-Lits. Its route has changed many times, and several routes have in the past concurrently used the name, or slight variants thereof. Although the original Orient Express was simply a normal international railway service, the name has become synonymous with intrigue and luxury travel. The two city names most intimately associated with the Orient Express are Paris and Istanbul, the original endpoints of the service.