Hauz-i-Shamsi is an ancient reservoir located in South Delhi, India. Historically significant, it dates back to the Lodi period, a dynasty that ruled over Northern India in the 15th and 16th centuries. The term "Hauz-i-Shamsi" translates to "Sun's Tank" in English.

This reservoir was constructed during the reign of Sultan Alauddin Khalji and served as a water tank to collect and store rainwater. The water from this reservoir was utilized for irrigation and other purposes in the nearby areas. The reservoir is known for its architectural design and historical importance, providing a glimpse into the engineering and water management systems of that era.

Over the years, the area surrounding Hauz-i-Shamsi has witnessed urbanization and development. Today, the reservoir is a protected monument under the Archaeological Survey of India (ASI). It stands as a reminder of Delhi's historical and architectural heritage, attracting visitors interested in history and culture.

Hauz-i-Shamsi offers a serene atmosphere, making it a peaceful spot for locals and tourists to visit and reflect on the historical significance of the region. The surrounding gardens and greenery add to the beauty of the site, providing a pleasant environment for visitors to explore and appreciate the past.