The Temple of Good Will, located in Brasilia, stands out as a singular landmark of interreligious dialogue in Brazilian public art. Inaugurated in 1989, the space was designed to be a point of spiritual convergence, welcoming people of all faiths and traditions. Its symbolic architecture, composed of a seven-sided pyramid, reflects an aesthetic and spiritual synthesis that incorporates elements from different religions and philosophies, such as Christianity, Buddhism, Islam, and indigenous traditions. The work explores how architectural materiality, and the use of universal symbols promote a cross-cultural and inclusive spiritual experience. In addition, it investigates the role of the Temple of Good Will as an example of public art that transcends religious barriers, fostering peace and unity through its aesthetic and functional proposal. The analysis covers the cultural and religious impact of space, as well as the public's responses to the model of integrative spirituality proposed by the temple. This study, therefore, positions the Temple of Good Will as a paradigmatic case of how art and architecture can foster interfaith dialogues in urban contexts, highlighting its potential as a tool for social transformation and contemporary spirituality.