Throughout Buddhist Asia, from India to Japan, one meets a recurring architectural form: a solid dome resting on a base and topped by a spire. It is the stupa, one of the oldest and most widespread sacred buildings in the world. Unlike a church or a temple, it is not made to be entered: it is made to be walked around. Its geometry is designed to be travelled, not inhabited.
From relics to cosmic form
Originally the stupa was a burial mound. According to tradition, after the Buddha's death his ashes were divided and kept under earth mounds in various places. These monuments became centres of devotion and, over time, took on an increasingly codified form.
One of the oldest and best-preserved examples is the Great Stupa of Sanchi, in central India, whose origins go back to the time of the emperor Ashoka, in the third century BC. The dome was later enlarged and surrounded by a railing with four great carved gateways, called torana, facing the four cardinal points.
The elements of the stupa
A classic stupa is made up of a few fundamental elements:
| Element | Traditional name | Function and meaning |
|---|---|---|
| Base | medhi | platform, often walkable |
| Dome | anda, «egg» | the main body, image of the cosmic seed |
| Summit enclosure | harmika | small square structure on top of the dome |
| Axis | yasti | pole rising from the centre towards the sky |
| Umbrellas | chattra | discs stacked along the axis, a sign of honour and of spiritual levels |
The name of the dome, «egg», is significant: the form recalls the origin of the world and the potential that contains all things. The axis running through the stupa from bottom to top is an axis mundi, the pillar uniting earth and heaven. The square of the harmika on top of the dome repeats the meeting of the figure of the earth with that of heaven found in many traditions.
The chorten and the five elements
In Tibet the stupa is called a chorten, and its form is often read as a stacking of the five elements:
- the square base as earth;
- the dome as water;
- the conical spire as fire;
- the crescent as air;
- the disc or drop at the summit as space.
The same scheme appears in the small stone pagodas of Japan called gorintō, «five-ring towers», where each element has a distinct geometric form: cube, sphere, pyramid, crescent and jewel. It is one of the clearest translations of a cosmology into solid figures.
Walking around the centre
The main ritual act before a stupa is circumambulation, in Sanskrit pradakshina: the devotee walks around the monument clockwise, keeping the stupa on their right. One does not enter the centre; one circles around it.
This movement has a deep meaning. The centre remains inaccessible and still, while the devotee moves in a circle like the planets around their axis. Walking around the stupa is a way of acknowledging the centre without claiming to possess it.
Borobudur: a mandala of stone
The grandest case of Buddhist architecture as sacred geometry is Borobudur, on the island of Java in Indonesia, built between the eighth and ninth centuries. Seen from above it is a mandala: a square plan with stairways at the middle of each side, rising in successive terraces towards a great central stupa.
The structure is divided into three parts, often linked to the three realms of Buddhist cosmology:
- the base, linked to the world of desire, with reliefs illustrating the consequences of actions;
- the square terraces, linked to the world of form, with long galleries decorated with narrative reliefs on the life of the Buddha and on Buddhist texts;
- the circular terraces, linked to the formless world, where seventy-two small perforated stupas stand, each containing a statue of the Buddha, around the main stupa.
The pilgrim climbs by walking each level clockwise, gallery after gallery. The passage from square to circle, from carved images to the stillness of the almost bare upper terraces, is a path from the many to the essential.
The lesson of the stupa
The stupa teaches a geometry of movement around the centre. The sacred point is not reached by an entrance but honoured by a patient, repeated path. At Studio Esoterico Cornelio this form is set alongside other images of the world axis, such as the sacred mountain, the cosmic tree or the column, to show how different cultures have given shape to the same intuition: there is a centre, and spiritual life is the way one moves in relation to it.
In short
- The stupa began as a mound for the Buddha's relics and became a codified cosmic form.
- Its elements are a base, a dome called the «egg», a square enclosure, an axis and umbrellas.
- In the Tibetan chorten and the Japanese gorintō the parts correspond to the five elements.
- The main rite is clockwise circumambulation around the centre.
- Borobudur, in Java, is a great stone mandala rising from square to circle.
