World Heritage Sites added by decade

UNESCO World Heritage Sites grouped by inscription decade, calculated from Zikzak's current dataset.

By decade

  • 1970s — 57 sites (42 cultural, 12 natural, 3 mixed)
  • 1980s — 261 sites (191 cultural, 57 natural, 13 mixed)
  • 1990s — 308 sites (245 cultural, 55 natural, 8 mixed)
  • 2000s — 261 sites (208 cultural, 50 natural, 3 mixed)
  • 2010s — 231 sites (181 cultural, 38 natural, 12 mixed)
  • 2020s — 155 sites (124 cultural, 28 natural, 3 mixed)

All UNESCO insights

Counts are based on Zikzak's current UNESCO World Heritage dataset, sourced from UNESCO. Last updated 7 August 2026. UNESCO insights