The Basilique Sacre-Coeur (Basilica of the Sacred Heart), a Roman Catholic church and familiar landmark on Montmarte, Paris, France, is located at the summit of the butte Montmartre, the highest point in the city.

Montmartre is known for its many artists who have been present at all times since 1880. Montmartre, an area around a hill in the 18th arrondissement, north of downtown Paris, is said to be extracted from either Mount of Martyrs or from Mount of Mars. Until 1873, when the Sacré-Coeur was built on top of the hill, Montmartre was a small village, inhabited by a mostly farming community.

The Basilique Sacre-Coeur was designed by the architect Paul Abadie in a Romanesque-Byzantine architectural style. Its foundation stone was laid in 1875. The basilica was not completed until 1914 and not officially opened for worship until 1919, after the end of the First World War. This was seen ironically by many French people as revenge for Prussia's defeat of France in the Franco-Prussian War.

Golden mosaics glow in the dim, echoing interior of the Sacré-Coeur. A climb to the top of the dome gives a great view of Paris, and the walk around the inside of the dome is worth the climb in itself. The mosaic of Christ in Majesty in the apse is one of the world's largest and there is a striking mural of Christ's Passion at the back of the altar. At the rear of the grounds is a reflective garden and water feature.

Permanent veneration of the Blessed Sacrament has continued uninterrupted in the Basilica since 1885. The crypt includes a remnant that some believe to be Christ's Sacred Heart, which gives the basilica its name.