National Polytechnic Museum

The museum has a collection of more than 22,000 items, but only 1,000 of them are permanently displayed. Collections are supplemented by a library with more than 12,000 books and journals, and an archive of about 2,000 documents. Permanent collections are divided in exhibitions of time measurement, transportation, photography and cinema, optics, audio equipment, radio and television, computing equipment, communications equipment and others.