Colombo is highly diverse, with a harmonious mix of Buddhists, Hindus, Muslims, and Christians. Religious landmarks are central to the city's identity.
### Buddhism - **Gangaramaya Temple**: One of the most important temples in Colombo, known for its eclectic mix of Sri Lankan, Thai, Indian, and Chinese architecture, and its vast museum. - **Kelaniya Raja Maha Vihara**: Located just outside the city limits, a sacred site believed to have been visited by the Buddha.
### Hinduism - **Ponnambalawaneswaram Kovil**: A stunning temple built entirely of South Indian granite. - **Captain's Garden Kovil (Sri Kailawasanathan Swami Devasthanam)**: The oldest Hindu temple in Colombo.
### Islam - **Jami Ul-Alfar Mosque (Red Mosque)**: An iconic architectural marvel in Pettah, characterized by its striking red-and-white candy-striped brickwork.
### Christianity - **St. Lucia's Cathedral**: The seat of the Archbishop of the Roman Catholic Archdiocese of Colombo. - **Wolvendaal Church**: One of the oldest Protestant (Dutch Reformed) churches in Sri Lanka, dating back to 1749. - **St. Anthony's Shrine, Kochchikade**: A deeply venerated Catholic church visited by people of all faiths.

