Delhi Travel Guide: A 7-Day Itinerary ✈️ Based on my visit to Delhi. Written by Debarun Sana. Delhi genuinely functions as a layered city rather than a single destination — Mughal-era Old Delhi, colonial and post-independence New Delhi, and a fast-moving contemporary capital all sit within the same metro area. This 7-day route covers the standard historical and cultural circuit, museums, markets, and a few genuinely underrated spots most first-time visitors miss entirely. An honest note on air quality Most Delhi guides, including earlier versions of this one, simply say "visit October to March" without mentioning that this window overlaps directly with the city's worst air pollution season. Based on the last few years of government data, Delhi's air quality deteriorates sharply from roughly November 1 to February 15, with average AQI readings in the 312-342 range during that period — solidly in the "very unhealthy" to "hazardo...