Floor mosaics in the main nave of the Lateran Archbasilica in Rome. 

The mosaics are the so-called Cosmati style mosaics. Cosmati was a Roman family of artists. They specialised among others in designing and making of mosaics. You will find them in many churches in Rome.

Lateran Archbasilica, although located far beyond Vatican city belongs to the Holy See (the Vatican state.)

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