The interior walls of the basilica were originally embellished with murals depicting episodes from Mother Mary's life and Stations of the Cross. These were painted during the tenure of the first rector, Msgr Dominic de Sa (1943-50). However, they were later replaced by fiberglass panels created by a group of Goregaon artists under the personal direction of former Rector Msgr Nereus Rodrigues (1995-2016).
The third level of Mount Mary Basilica features a circular rose window bearing the inscription anno junilaei 1904—the golden jubilee year of the promulgation of the Dogma of the Immaculate Conception (December 8, 1854). The current basilica was also opened to the public in the same year.
Bandra Catholics come to seek the intercession of the Blessed Virgin Mary during troubled times, praying for miracles and offering thanksgiving for the fulfilment of vows and wishes. The devotion to Mary, known as Marian's devotion, is a central aspect of Catholic spirituality.
The basilica’s apse contains the figure of the Blessed Virgin Mary with the Christ Child, positioned atop a seven-step-high white marble altar. The altar also features a tabernacle intended for the Eucharist, with the inscription panis vitae (Bread of Life in Latin).
Good Friday is observed at Mount Mary Basilica with solemnity and profound reverence, reflecting its significance among the Catholic Christians in Mumbai.
The Feast of the Road Cross is celebrated annually on May 31, commemorating the visitation of the Blessed Virgin Mary. In Catholic Christianity, the visitation recounts the encounter in the New Testament when the pregnant Virgin Mary visits her cousin Elizabeth, who is pregnant with John the Baptist. This event is described in the Gospel of Luke 1:39–56.
Mount Mary Basilica is designed in the neo-gothic style, which gained popularity in the late 19th century CE. Materials for its construction were transported by sea and carried up the hill using bullock carts and donkeys. The basilica is the fourth structure on the site. The first chapel, dedicated to Our Lady of the Mount, was established in 1570, at a time when Bandra was under Portuguese rule.
The marble statue of Our Lady of Fatima stands six and a half feet tall, holding a rosary. It was built as a memorial to the Marian Congress held in Mumbai from December 4–8, 1954. Our Lady of Fatima is a title attributed to the Virgin Mary following her apparitions to three shepherd children in Fatima, Portugal, in 1917.
The Mount Mary Grotto, officially known as the Oratory of Our Lady of Fatima, stands facing Mount Mary Basilica across Mount Mary Road. Adorning the walls of the oratory is the sevenfold message of Our Lady of Fatima, encompassing prayer, penance, meditation, peace, rosary, reparation, and sacrifice.
The raw ingredients are mixed at the mill. The mixture is finely ground into powder form. A single kg of masala takes about 4–5 hours of pounding and grinding to blend the powder effectively.