Four years after opening its doors to the first tenants, about 8,000 people now work in the building for companies that include Condé Nast, streaming service DAZN, and workout app Aaptiv.

I found the inside to be much more casual than I expected — and my tour guide, Jordan Barowitz, Vice President of Public Affairs for the Durst Organization, which oversees leasing in the building, backed up this observation.

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He told mewhen they first started marketing the building's office spaces in 2010, they thought it would be a "formal office building" with lots of "guys in suits." Instead, they got mainly smaller companies in media, technology, and other creative industries. While I certainly noticed some guys in suits, the majority of employees I saw were dressed casually, many with beards and sneakers.

Here's what the inside of One World Trade Center looks like, four years after the first tenants moved in.

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SEE ALSO: NYC's new World Trade Center expected its offices to be full of 'guys in suits' — but I took a tour of the building and quickly saw that many of the actual tenants are very different

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