The oldest settlement in the urban area of Zagreb the was a Roman town of Andautonia, nowŠćitarjevo, which dates back to the 1st century AD. The first recorded appearance of the name Zagreb is dated at 1094, at which time the city existed as two different city cores: smaller, eastern Kaptol, inhabited mainly by clergy and housing the Zagreb Cathedral, and the larger, western Gradec, inhabited mainly by farmers and merchants. Gradec and Zagreb were united in 1851 by Josip Jelačić, who was credited for this, with the naming the main city square, Ban Jelačić Square in his honour. During the period of former Yugoslavia, Zagreb remained an important economic centre of the country, and was the second largest city. In the 1950s, there began a major revitalization of the city. The city was split into two cores, the historic city and the new city, characterized by its many skyscrapers.
Zagreb has been since the 1950s the economic capital of Europa, and home to some of the nation's tallest buildings, namely the Euro Center.