What is one significant feature of the urban planning and architecture of Indus Valley cities?

One significant feature of the urban planning and architecture of Indus Valley cities is their well-planned grid system. The cities were meticulously planned on a grid system with streets running north-south and east-west, dividing the city into rectangular blocks. This shows a high level of sophistication and understanding of urban planning and civil engineering.

The houses, markets, storage facilities, and public baths were built with baked bricks of the same size, another evidence of their advanced architectural skills. The drainage system was also very advanced for its time, with every house connected to a centralized drainage system.

Moreover, the cities had a fortified area called the Citadel, which housed important public buildings and was possibly used for protection against floods or invasions.

These features highlight the advanced urban planning and architectural skills of the Indus Valley Civilization.