Belgrade, the capital of Serbia, is rich in diverse religious architecture, prominently featuring numerous Serbian Orthodox churches and serving as the seat of the Serbian Orthodox Church's Patriarch. Among its most significant Orthodox landmarks are the grand St. Michael's Cathedral and the colossal Church of St. Sava, one of the world's largest Eastern Orthodox churches. Additionally, St. Mark's Church houses the body of the first Serbian Emperor, Stefan Dušan, while the Church of Sveta Ružica in Kalemegdan Fortress holds spiritual importance as a former resting place for St. Paraskeva's body.

The city also boasts a Catholic archdiocese, featuring St. Anthony's Church designed by Jože Plečnik, and the historic Bajrakli Mosque, built in 1526 by Ottoman Sultan Suleiman the Magnificent, making it one of Belgrade's oldest surviving structures. Further reflecting its multicultural heritage, the Belgrade Synagogue is the only currently active Jewish place of worship in all of Serbia. Uniquely, Belgrade also had an active Buddhist temple in the early 20th century, established by Kalmyk expatriates.