Correct Answer: The Pink City
Explanation: Jaipur is the capital of the state of Rajasthan and is known as the Pink City. Maharaja Ram Singh II had many of the buildings in the city painted terracotta pink—which represents hospitality—to welcome Prince Albert of Whales in 1876. Jaipur famously houses Hawa Mahal, the Palace of the Winds, a pink sandstone palace built in 1799. The five-story building was shaped in the form of the crown of Krishna, the Hindu god. The Purdah system, at the time, forbid royal women from appearing in public, and so latticed windows were designed to allow ladies to peek out at the daily happenings of the court while remaining hidden.
A sea of indigo, Jodhpur is called the Blue City because its landscape is speckled with azure abodes. The blue pigment coating on the houses is used to signify that a Brahmin, a person of the highest caste, lived there.
The Golden City of Amritsar is named after its brilliant golden temple, Harmandir Sahib. This Gurdwara is revered as the most sacred pilgrimage site for Sikhs. A langar (community kitchen) serves vegetarian fare to all visitors, which reaches upward of 100,000 a day.
In Hinduism, Varanasi is the holiest city, founded by Shiva, who is one of the three principle deities along with Brahma and Vishnu. Pilgrims gather at the Ghats stone embankments along the river Ganges to bath and perform puja ceremonies. Varanasi is known as the City of Temples for its many enchanting shrines and ancient places of worship.
Photo Credit—Varanasi: Dennis Jarvis [CC BY-SA 2.0], via Flickr