1. Red Fort: A UNESCO World Heritage Site, this 17th-century castle, noted for its huge red sandstone walls, represents the era of Mughal power in India.
2. India Gate: This renowned war memorial, located on Rajpath, is dedicated to the troops who died in World War I.
3. Qutub Minar: A soaring victory tower ensconced in the old Qutub complex, Qutub Minar is an excellent example of early Indo-Islamic architecture.
4. Lotus Temple: The Lotus Temple, known for its gorgeous flower-like architecture, is a Bahá' House of Worship that welcomes members of all religions.
5. Humayun's Tomb: A forerunner to the Taj Mahal, this mausoleum is an architectural masterpiece nestled within exquisite gardens that exemplifies Mughal architecture at its finest.
6. Akshardham Temple: This Hindu temple complex is a contemporary architectural marvel that displays traditional Indian and Hindu culture, spirituality, and architecture.
7. Jama Masjid: One of India's largest mosques, Jama Masjid, with its huge courtyard and elaborate decorations, is a tribute to the majesty of Mughal architecture.
8. Lodi Gardens: A tranquil hideaway in the centre of Delhi, Lodi Gardens features ancient tombs and beautiful flora.
9. Chandni Chowk: A lively 17th-century bazaar, Chandni Chowk is noted for its genuine Indian food, textiles, and spices.
10. National Museum: The National Museum, which houses a massive collection of Indian historical artefacts, provides a deep dive into the country's rich legacy.
11. Raj Ghat: Raj Ghat is a peaceful pilgrimage and reflection location dedicated to Mahatma Gandhi.
12. Connaught Place: This busy commercial centre, known as CP, is known for its Georgian-style buildings, branded stores, and different cuisines.