The Green Cathedral

The Green Cathedral is a land art installation made from 178 Italian poplar trees arranged in a cathedral shape, measuring roughly 150 meters long and 75 meters wide. Stone pathways run between the trees to outline the structure of this living architecture.

Artist Marinus Boezem created this work in 1987 by planting poplar trees on a raised mound in Southern Flevoland. The project emerged as a novel way to express architectural form through living nature.

The Green Cathedral serves as a gathering space for weddings, funerals, meetings, and religious services that mark important moments in the lives of those who visit from Almere.

The work is located in Almere Hout and can be visited year-round. The pathways between the trees allow for easy walking through the structure, and you can take in the overall design from various vantage points.

Next to the poplar cathedral sits a clearing with beech trees that is designed to gradually replace the aging poplars over time. This creates a natural succession where the original work slowly transforms into a new forest.

Location: Almere

Inception: April 16, 1987

Creator: Marinus Boezem

Made from material: Populus nigra var. italica

Part of: Sleutelwerken

GPS coordinates: 52.32201,5.31735

Latest update: December 9, 2025 18:47