Amazon's first fulfillment center in the state of New York opened last September in the New York City borough of Staten Island.

The massive fulfillment center could hold 18 football fields within its hundreds of thousands of square feet, and more than 3,000 people are employed there.

We visited the fulfillment center last week for a tour of one of Amazon's most modern warehouses in the US.

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Forget about "HQ2."

Last September, Amazon opened a gigantic facility in New York City that instantly created thousands of jobs.

It was Amazon's first major fulfillment center in the state of New York, and it was specifically opened to serve one of Amazon's largest delivery markets: the New York City metro region.

The shipping warehouse, based on Staten Island, is also one of Amazon's most futuristic; in addition to the thousands of people working there, it has dozens of robots.

Business Insider visited the massive fulfillment center last week — here's a look inside: