Although Skopje has been destroyed many times through its history, it still has many historical landmarks which reflect the successive occupations of the city. Skopje has one of the biggest Ottoman urban complexes in Europe, with many Ottoman monuments still serving their original purpose. It was also a ground for modernist experiments in the 20th century, following the 1963 earthquake. In the beginning of the 21st century, it is again the subject of massive building campaigns, thanks to the "Skopje 2014" project. Skopje is thus an environment where old, new, progressist, reactionary, eastern and western perspectives coexist.