Andalucia, Spain

Western Europe’s oldest existing city is also in trouble: Cadiz and a few other parts of Andalucia will be harshly affected by climate change. The port was established by the Phoenicians more than 3,000 years ago.

Still, sea levels could mean future coastal flooding wreaking havoc on the city’s lovely tree-lined plazas, cobblestoned center, and historic sea fortifications.

Andalucia’s lower Guadalquivir River area is at risk of flooding as well, which would have ramifications for parts of the region’s riverside capital Seville.

Male, Maldives

The Maldives has been aware of the danger of rising sea levels for quite some time now. The nation has even begun building a floating city to deal with it.

So it isn’t so much the Maldivan capital, Male itself, that’s at risk but its infrastructure and surrounding islands. Rising tide levels pose a serious concern from the airport and a considerable amount of Hulhumale island.

Alexandria, Egypt

Several cultural heritage sites are at stake in Egypt’s ancient seaport of Alexandria. The modern metropolis was founded by Alexander the Great around 330 BC and could be lost to future coastal flooding in the next few decades.

Key sites include the Citadel of Qaitbay, built where the legendary Pharos lighthouse used to be, Pompey’s Pillar and the ruins of the temple of Serapeum, and the Bibliotheca Alexandrina, a modern library built in memory of the city’s esteemed ancient library and one of Egypt’s primary cultural venues.

Banjarmasin, Indonesia

The Indonesian city of Banjarmasin is built mainly below sea level on a swampy delta near the Barito River. Climate Central shows it is set to overflow its banks by 2030 regularly.

As well as being known as the “City of Thousand Rivers,” Banjarmasin is also a hub for indigenous Banjarese culture.