2025 France - The Basilica Sacre Couer

he Basilica of Sacré-Cœur sits atop the Butte Montmartre, the highest point in Paris, its gleaming white Romano-Byzantine domes visible from across the city. The travertine stone it's built from has a unique self-whitening property: it secretes calcite when it rains, keeping the façade perpetually bright. Inside, the apse is dominated by one of the world's largest mosaics, depicting Christ with open arms. The bell tower houses the Savoyarde, one of the heaviest bells in the world