The most decorative Greek order is the Corinthian order. Here's why:
1. The Corinthian order is characterized by elaborate decorative elements, especially in the form of acanthus leaves and floral motifs. These intricate designs make it the most ornate of the three classical Greek orders.
2. The Ionic order is also known for its decorative features such as scroll-shaped capitals, but it is not as elaborate as the Corinthian order in terms of overall decoration.
3. The Doric order, on the other hand, is the simplest and most austere of the three orders, with minimal ornamentation and a more solid appearance compared to the Corinthian and Ionic orders.
In summary, if you're looking for the most decorative Greek order, the Corinthian order is the way to go due to its intricate and elaborate design elements.