Explanation: The site of Mohenjo-Daro had a planned town, built on a platform. It has two distinct areas. One is identified as a citadel and another as the lower town.

• The houses had bathrooms paved with burnt bricks and proper drains. Some houses had stairs indicating the existence of an upper floor.
• The houses had multiple rooms. Many of the houses had a central courtyard with rooms all around.
• The Great Bath is a tank situated within a courtyard. The corridors were present on all four sides and stairs are seen on the northern and southern sides.

Source: Tamil Nadu NCERT