7 Places That Were Once Underwater but Are Now Major Destinations

Some of the world’s most famous places look permanent today, but their landscapes were created through dramatic changes in nature, climate, and human engineering. These destinations have transformed from seas, lakes, and wetlands into places millions visit every year.

1. The Netherlands Was Built From the Sea

Much of the Netherlands sits on land reclaimed from water. Through centuries of dikes, pumps, and engineering projects, the country created new farmland and cities where the ocean once existed.

2. Mexico City Was Built on a Lake

Before Spanish conquest, the Aztec capital of Tenochtitlan sat on an island in Lake Texcoco. Over centuries, the lake was drained and filled, creating the foundation for modern Mexico City.

3. Dubai Created Land Where There Was Only Ocean

Dubai’s famous Palm Jumeirah and other artificial islands were built by moving millions of tons of sand and rock into the Persian Gulf, dramatically expanding the city’s coastline.

4. Venice Was Once a Shallow Lagoon

The city of Venice was built on hundreds of small islands in a marshy lagoon. Wooden foundations and careful engineering allowed a major city to rise where land was barely above the water.

5. The Aral Sea Became a Desert

Once one of the world’s largest lakes, the Aral Sea dramatically shrank after rivers were diverted for agriculture. Former fishing towns now sit surrounded by dry land.

6. The Maldives Are Made From Ancient Coral Reefs

The islands that attract millions of tourists each year formed from coral structures that rose above the ocean over thousands of years.

7. Doggerland Connected Britain to Europe

Thousands of years ago, the area now beneath the North Sea was a populated landscape of rivers, forests, and settlements. Rising seas eventually covered it, separating Britain from mainland Europe.