Basilique du Sacré-Cœur de Montmartre

The Basilique du Sacré-Cœur de Montmartre, commonly known as Sacré-Cœur, is a significant landmark in Paris located at 35 Rue du Chevalier de la Barre. The video captures a visit to this basilica, highlighting the impressive crowds there, suggesting that it's better to come early in the morning if you want to explore without the hustle. The video also notes that while they did not plan to go inside, the line was very long, emphasizing the popularity and the crowded nature of the attraction.