"Provide a detailed description of the architectural and symbolic elements of a Gurudwara, the sacred place of worship in Sikhism. Explore the layout of the Gurudwara, including the main prayer hall, domes, and entranceways. Discuss the significance of key architectural features such as the Nishan Sahib (Sikh flag), the Langar hall (community kitchen), and the Sarovar (sacred pool). Delve into the symbolism behind the design elements, and examine how the architecture reflects the principles of equality, humility, and community service central to Sikh beliefs. Consider the spiritual experience and atmosphere created by the Gurudwara's design, fostering a sense of devotion and unity among worshippers."