Sariska Park (866 km2), which became a national park in 1982, is one of Rajasthan's two tiger reserves. Due to poaching, sadly there remain only around ten tigers in these wild rocky hills covered with acacias, so the chances of catching a glimpse of one are slim. You should have more luck spotting Arabian gazelle, langur monkeys, deer, stags or nilgai antelope. Preferably come between November and March and bring your binoculars!