Stepwell in Adalaj

Stepwells are unique medieval water buildings. We visited one in the village of Adalaj, close to the city of Ahmedabad in Gujarat. Imagine an area the size of a football pitch quarried down to a depth of some two hundred feet. The well at the bottom converted to a swimming pool and water source with hundreds of intricate carved steps leading down.
Built in 1499 by a Muslim king this one is intricately carved and is five stories in depth and provided basic water needs for drinking, washing and bathing. How on Earth this has not been awarded World Heritage status is totally beyond me.