'Tax office' in the Bible

And Jesus passing by thence, saw a man sitting at the tax-office, named Matthew, and saith to him, 'Be following me,' and he, having risen, did follow him.

and passing by, he saw Levi of Alpheus sitting at the tax-office, and saith to him, 'Be following me,' and he, having risen, did follow him.

And after these things he went forth, and beheld a tax-gatherer, by name Levi, sitting at the tax-office, and said to him, 'Be following me;'