The Duke and Duchess visited the Salaam Baalak Contact Centre in Delhi to highlight the work being done to protect and support vulnerable young people in the city.
They then met Prime Minister Modi and joined him for lunch.
In the afternoon The Duke and Duchess traveled to the State of Assam, where they received a traditional welcome.
Finally they were invited to join the Bohag Bihu festival, the celebration of the Assamese New Year. Around a campfire, the Duke and Duchess met local people and saw dance and musical performances.
Also, Duke and Duchess of Cambridge have met some of India’s poorest and most vulnerable children fending for themselves at New Delhi railway station.
The royals visited a drop-in centre run by Salaam Baalak Trust at the capital’s station - where on average 6,600 children travel to each year, often on their own.
The charity helps children aged from five to 18 years providing food, education, healthcare and shelter.