The Pionen data center in Stockholm, Sweden houses data in a former national defense facility.

The Stockholm Public Library holds over 2 million volumes of books and 2.4 million audiotapes.

The Bahnhof data center in Kista, Sweden is modeled to look like a space station, housing servers within bullet-proof steel.

The Monastery of Montserrat in Spain holds 1,500 theological manuscripts.

The Sabey Data Center in New York City is a 1-million-square-foot high-rise facility.

In the Arnano lab in Grenoble, France, machines engrave thousands of pages of text onto a 12-inch-wide disc crafted from synthetic sapphire.

This vault in the Swiss Federal Office of Metrology in Bern, Switzerland contains a copy of the prototype kilogram, which still defines the weight of the base unit.

The Large Hadron Collider produces 30 petabytes of data per year, stored in the 10,000 servers in the 15,600-square-foot main room at the CERN Data Center in Geneva, Switzerland.

The Brussels regional traffic agency stored plans for the Reyers Bridge in the pillars of the bridge itself.

The Pionen Data Center in Stockholm, Sweden is buried under 100 feet of granite and protected by a 15-inch-thick steel door. It used to be a national defense center, and is now used by Swedish internet provider Bahnhof to store digital data.

At the CERN Data Center, 10,000 servers hold 30 petabytes of data. These backup generators shut down the system if there's an electrical network problem.

This atomic clock, located at the Swiss Federal Office of Metrology in Bern, Switzerland, operates at an uncertainty of one second every 30 million years.

The outside of the Google Data Center in Baudour, Belgium, protected by a fence and hidden by woods and artificial dunes.

The Mundaneum in Mons, Belgium, created by Belgian lawyers in 1910, houses over 12 million index cards, designed to house all the world's information.