Post Maha Janapadas period (1500 bce—200 ce)

The Great Stupa at Sanchi (4th-1st century BCE). The dome shaped stupa was used in India as a commemorative monument associated with storing sacred relics.

The Buddhist stupa, a dome shaped monument, was used in India as a commemorative monument associated with storing sacred relics. The stupa architecture was adopted in Southeast and East Asia, where it became prominent as a Buddhist monument used for enshrining sacred relics. Upon its discovery, this architectural became known as pagoda to the people from the Western world. Fortified cities with stūpas, viharas, and temples were constructed during the Maurya empire (c. 321–185 BCE). Wooden architecture was popular and rock cut architecture became solidified. Guard rails—consisting of posts, crossbars, and a coping—became a feature of safety surrounding a stupa. Temples—build on elliptical, circular, quadrilateral, or apsidal plans—were constructed using brick and timber. The Indian gateway archs, the torana, reached East Asia with the spread of Buddhism. Some scholars hold that torii derives from the torana gates at the Buddhist historic site of Sanchi (3rd century BCE - 11th century CE).

Rock-cut stepwells in India date from 200-400 CE. Subsequently, the construction of wells at Dhank (550-625 CE) and stepped ponds at Bhinmal (850-950 CE) took place. The city of Mohenjo-daro has wells which may be the predecessors of the step well. As many as 700 wells, constructed by 3rd millennium BCE, have been discovered in just one section of the city, leading scholars to believe that 'cylindrical brick lined wells' were invented by the people of the Indus Valley Civilization. Cave temples became prominent throughout western India, incorporating various unique features to give rise to cave architecture in places such as Ajatna and Ellora.

Walled and moated cities with large gates and multi-storied buildings which consistently used arched windows and doors are important features of the architecture during this period. The Indian emperor Ashoka (rule: 273—232 BCE) established a chain of hospitals throughout the Mauryan empire by 230 BCE. One of the edicts of Ashoka (272—231 BCE) reads: "Everywhere King Piyadasi (Asoka) erected two kinds of hospitals, hospitals for people and hospitals for animals. Where there were no healing herbs for people and animals, he ordered that they be bought and planted." Buddhist architecture blended with Roman architecture and Hellenestic architecture to give rise to unique blends—such as the Greco-Buddhist school.

Early Common Era—High Middle Ages (200 ce—1200 ce)

The temple complex at Khajuraho—adhering to the shikhara temple style architecture—is a UNESCO World Heritage Site.

Universities—housing thousands of teachers and students—flourished at Nalanda and Valabhi between the 4th-8th centuries. South Indian temple architecture—visible as a distinct tradition during the 7th century CE—is described below:

The South Indian temple consists essentially of a square-chambered sanctuary topped by a superstructure, tower, or spire and an attached pillared porch or hall (maṇḍapa, or maṇṭapam), enclosed by a peristyle of cells within a rectangular court. The external walls of the temple are segmented by pilasters and carry niches housing sculpture. The superstructure or tower above the sanctuary is of the kūṭina type and consists of an arrangement of gradually receding stories in a pyramidal shape. Each story is delineated by a parapet of miniature shrines, square at the corners and rectangular with barrel-vault roofs at the centre. The tower is topped by a dome-shaped cupola and a crowning pot and finial.

North Indian temples showed increased elevation of the wall and elaborate spire by the 10th century. Richly decorated temples—including the complex at Khajuraho—were constructed in Central India. Indian traders brought Indian architecture to South east Asia through various trade routes.