Kunal Kapoor whetted the appetite of the travel junkie in him by trekking up to the world’s highest post office in Hikkim, located at 14,567 feet in Himachal Pradesh. “Rediscovered the joy of selecting, writing and posting a postcard! Felt so nostalgic,” he gushed, posing in front of the national landmark with fellow traveller Cyrus Sahukar.