An extraordinary example of Byzantine architecture, the Basilica of Saint Vitale was built between 527 & 548.

The massive expanses of colorful and highly detailed mosaics are still breathtaking even after nearly 1500 years.

This image shows the right lunette of the Presbytery including the sacrifices of Abel and Melchizedeck. Note the Byzantine capitals and stuccos of the underarch.
For a detail (crop) of the mosaic above: http://www.pbase.com/jboard/image/48715466/original