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Barcelona Supercomputing Centre
Perhaps the datacentre with the most impressive home of all is housed at the Barcelona Supercomputing Centre.
Located amid the colonnades and Romanesque arches of the Torre Girona chapel, MareNostrum is one of the fastest supercomputers in the world.
No longer a place of worship, today the chapel is the site of supercomputing research into computer, Earth and life sciences. The machine has 10,240 IBM Power PC 970MP processors that have a combined peak performance of 94.21 teraflops.
Image: Barcelona Supercomputing Centre