The Roman Catholic Diocese of Rimini is located in the city of Rimini, which is situated on the eastern coast of Italy, in the region of Emilia-Romagna. Rimini is well-known for its beautiful sandy beaches, vibrant nightlife, and historical sites.

The diocese of Rimini has a rich history that dates back to ancient times. The city itself was founded by the Romans in 268 BC and played a significant role during the Roman Empire. Rimini was also an important center of Christianity, and it is believed that St. Gaudentius, the first bishop of Rimini, was appointed by Pope St. Sixtus II in the 3rd century.

One of the most iconic landmarks in Rimini is the Tempio Malatestiano, also known as the Rimini Cathedral. This stunning church was originally built as a Franciscan church in the 13th century but was later transformed into a cathedral by the Malatesta family in the 15th century. The interior of the cathedral is adorned with beautiful frescoes and artwork.

Another notable religious site in Rimini is the Church of San Giuliano Martire. This church, dedicated to St. Julian the Martyr, is one of the oldest in the city and is known for its unique Byzantine-style architecture.

Rimini is also famous for hosting a vibrant carnival called "Carnevale di Rimini" every year. This carnival attracts visitors from all over the world and features colorful parades, music, and traditional costumes.

If you are planning to visit Rimini and explore its religious and historical sites, it is advisable to check the opening hours of the churches and cathedrals in advance. Additionally, it is recommended to dress modestly when visiting religious sites out of respect for the local customs and traditions.

Overall, Rimini offers a fascinating blend of history, culture, and stunning natural beauty, making it a must-visit destination for tourists.