Harmony of the Renaissance
What is the visual, or other, effect of this portal? Is there a design principle? Is it the aesthetics and the design principle? Is it the aesthetics and the design criteria of the Renaissance or is the construction itself responsible for the special effect of the Batavia portal?
Renaissance Art (15th/16th century) is regarded as the rebirth of classical antiquity in terms of values, aesthetics and artistic perception, as well as the newly discovered representation of perspective. New values demanded a new view of mankind. The earth is no longer the centre of the world, but revolves around the sun. Man is at the centre of the spiritual world and is seen as the measure of all things.
The Batavia portal was designed according to the rules of the “golden ratio”. The number Phi is an irrational number closely interwoven with art and beauty. It has an infinite number of decimal places. Phi 1.6180… is referred to as “the number of creation”, “the world formula”, “the golden number” or the “divine ratio”. The numerical value is the core of the golden ratio. Dividing a distance “in the golden ratio” means that the length of the smaller section “a” relates to the larger section “b” in the same way as the latter relates to the length of the initial section “c”.
With simple, ideal geometric shapes such as squares and circles, the Italian Renaissance revived the formal language of antiquity and borrowed building elements such as columns, pilasters, capitals and triangular pediments. The Batavia portal was also created in accordance with these design principles.
A portal is regarded as the centrepoint of the Italian Renaissance’s façade design. The framing is a moulded reveal with ashlar work (Rustica) with columns. It is closed off horizontally by an architrave and crowned with a triangular pediment. The wedge-shaped keystone inserted at the highest point of an arch makes the construction self-supporting. The keystone of the Batavia portal — the features of which were fully eroded over centuries beneath the waves — probably depicts a lion’s head.