Baku has wildly varying architecture, ranging from the Old City core to modern buildings and the spacious layout of Baku port. Many of the city's landmarks were built during the early 20th century, when architectural elements of the European styles were combined in eclectic style. Baku has an original and unique appearance, earning it a reputation as the 'Paris of the East'. Baku joined UNESCO's Network of Creative Cities as a Design City on 31 October 2019 on the occasion of World Cities' Day.