Flooded crypt, Basilica of San Francesco, Ravenna, Italy

In the Italian province of Ravenna lies the Basilica of San Francesco, recognised for its beauty and historical significance.

This Romanesque church, originally built in 450 CE, features a sturdy square bell tower added in the 9th century, enhancing the basilica's exterior.

Its design features three naves, divided by two rows of 12 columns each.

Featured in today's image is the basilica's real showstopper: the basement crypt or a burial chamber is a stunning model of early religious design.

Complete with vaulted ceilings that slope down into rows of stone columns, its floor is a work of art itself.

It's inlaid with beautifully intricate mosaic tiles that have withstood the test of time.