The hiragana syllable に(ni). Its equivalent in katakana is ニ(ni). It is the twenty-second syllable in the gojūon order; its position is な行い段(na-gyō i-dan, “row na, section i”).
In the sense indicating destination, the particles へ(he) and に(ni) are often interchangeable, though there is a slight difference of connotation or emphasis. へ(he) emphasizes the journey to the destination, while に(ni) emphasizes the arrival or entering it. The distinction is not quite the same as between Englishto and into; に(ni) is usually best translated as to because に(ni), unlike Englishinto, can refer to the journey in addition to the arrival or entering the destination.