A fun fact often repeated about the Colosseum: Emperor Titus had it flooded for naval battle spectacles.

Roughly 2,000 years later, Italian contracting company Myrtha Pools can duplicate the trick, anywhere in the world.

The upcoming U.S. Olympic Swimming Team Trials in Indianapolis are projected to draw 30,000 fans. To accommodate them, Lucas Oil Stadium is the site. Since it is a football stadium with no aquatic facilities, organizers USA Swimming have contracted Myrtha Pools to create two-and-a-half pools at the Stadium.

It is a massive undertaking. Myrtha actually constructs the pools in Italy, then ships them to the U.S. in sections, where they're assembled on-site—in just three weeks.

If you're curious what the sections look like and how they go together, here's an animation from the company:

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And a local news report with footage of the actual construction:

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The Trials start on June 15th. Roughly 1,000 swimmers will compete, but only 52 will be heading to France.