The 16th-century Amer Fort is one of the most mesmerising sights in Rajasthan. Walk up its steep access ways and under its arches, and you will feel as if you&rsquove stepped back in time, and you will never want to wrench yourself away from its confines. Except, of course, when the outside temperature is 50° Celsius, and it gets all hot and sweaty, ruining not only your clothes, but also your trip.