Saudi Arabia is building a futuristic mega-city called Neom deep in a desert bordering the Red Sea.

The state has pledged at least $500 billion to make it happen, and is soliciting further investment.

Blueprints obtained by the Wall Street Journal detail wild plans for artificial rain, a fake moon, robotic maids, and holographic teachers.

Phase one is due for completion in 2020, with the final brick laid in 2025. It is unclear whether it will live up to its sky-high expectations.

Here's everything we know about the city which Saudi Arabia says will be 33 times the size of New York City.

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Saudi Arabia is building a futuristic mega-city 33 times the size of New York City from scratch.

Saudi officials describe it as "the world's most ambitious project."

It's called Neom, a planned 16-borough city on the Red Sea coast in the northwestern Saudi province of Tabuk.

Crown prince Mohammed bin Salman told Bloomberg in October 2018 that Neom will be completed in 2025, and phase one is nearing completion.

Here's everything we know about it so far