Mohenjo-Daro

Core idea

Orthogonal grid with advanced drainage, Great Bath, and granary — no palace or temple dominates

Why it matters

Earliest known example of systematic urban sanitation and egalitarian city planning; predates Hippodamus by 2,000 years

Description

Built around 2500 BCE in the Indus Valley, Mohenjo-Daro was laid out on a striking orthogonal grid divided into a raised western 'citadel' and a lower residential town. Streets ran on cardinal axes; brick houses turned blank walls to the street and opened onto private courtyards, many with their own wells and bathrooms connected to covered street drains. Civic structures included the Great Bath and a massive granary, but — remarkably — no palace or grand temple has been identified, and houses vary little in size.

Significance

Mohenjo-Daro is the world's earliest example of systematic sanitary urbanism, with citywide drainage two thousand years before Hippodamus and four thousand before modern sewers. Its apparent lack of monumental rulers' architecture challenges the assumption that early cities required kings, suggesting an alternative, more egalitarian path into urban life.

What became of it

Largest Mature Harappan city, built on a planned grid with citadel and drainage; declined and was abandoned c. 1900 BCE amid the wider Indus collapse, never reoccupied. Now threatened by salinity and erosion.

Critique

Much of the lower city remains unexcavated and groundwater/salt has halted digging, so area and population figures are extrapolations with wide uncertainty.

What shaped it

• The grid (c. 2500 BCE)
• The sewer / sanitary drain (c. 2500 BCE)
• Standardised brick and municipal sanitation (c. 2600–1900 BCE)
• Writing (cuneiform and early scripts) (c. 3200 BCE)
• Agriculture and the Neolithic revolution (from c. 9500 BCE)

Sources

• https://en.wikipedia.org/wiki/Mohenjo-daro
• https://humanjourney.us/ideas/connecting-with-the-gods/mohenjo-daro-indus-civilization/