Unique in Greece, the Rotunda is a cylindrical building from the early 4th century AD. The mosaics inside are really impressive. The Rotunda is a massive circular structure (built in 306 AD) with a masonry core. Through its long history, it has gone through multiple periods of use and modification as a polytheist temple: a Christian basilica, a Muslim mosque, and a Christian church once again. A minaret is preserved from its use as a mosque, and ancient remains are exposed on its southern side. Some Greek publications claim it is the oldest Christian church in the world! These days, the Rotunda is primarily an archaeological site, where visitors can see some remaining Christian mosaics and feel the weight of history.

With a world-wide reputation, this outstanding museum is devoted to all marine sciences, presenting more than 6,000 specimens. It was Albert I who founded the museum in 1910, and today its collections of marine fauna are priceless and unique. In the well-known “Aquarium” you will find about 90 pools with the rarest species of fish in wonderful shapes and colours. The museum building is an attraction in itself. Located by the Monaco-Ville cliff, it is one of Monaco's most fascinating buildings.

Sculptor Francisco Salzillo lived in Murcia in the 18th century, and christianity heavily inspired his original and colourful work. The Muzeo Salzillo displays close to 500 of his works of art, and each Easter, his art is used in the traditional parade through the city.