This beautiful church is a must-visit attraction in Madrid. The grand architecture and stunning marble statues are a sight to behold. The church's history and significance are well-preserved, and the atmosphere is peaceful and serene. The exterior is equally impressive, with a wide stone staircase and a beautifully decorated facade.The interior of the church is breathtaking, with a precious cúpula, a spectacular retablo, and the sepulcros of Fernando VI and Bárbara de Braganza and O'Donell. The church's visit is free, making it an excellent choice for those looking for a cultural experience without breaking the bank.The staff is friendly and welcoming, and the accessibility features make it easy for visitors with mobility issues to navigate the church. However, it's worth noting that the tumba of Bárbara de Braganza is not accessible to the public, which may be a disappointment for some visitors.Overall, this church is a hidden gem in the heart of Madrid, and it's definitely worth a visit. Whether you're a history buff, an architecture enthusiast, or simply looking for a peaceful retreat, this church has something to offer. Just be sure to plan your visit accordingly, as the wait time can be up to 30 minutes on weekends.