New Delhi is a blend of rich history and culture to explore. Here are some places you could visit as a solo traveller. -Walking around Lodhi garden -Exploring old Delhi especially through Chandi chowk bazaar
-Viewing unesco world heritage site Jama masjid -Experiencing tranquillity of nature at Jha deer park
From Delhi you could plan solo trips to Mussoorie, Kullu, Solang valley, Pushkar, Auli and Mathura.
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You may cover all 3 UNESCO World Heritage sites (Qutub Minar, Humayun’s Tomb and Red Fort), Lotus Temple, Lodi garden and stroll in Chandni Chowk - Fatehpuri area for awesome street food. If having another day, plan for Akshardham Temple also.