塔 is a Japanese kanji written with 12 strokes, listed here under the keyword “pagoda”. It is built from 合 (fit), 土 (soil) and 艹 (mugwort). In Remembering the Kanji by James W. Heisig it is frame 270.
On KumiJi Glyph Explorer, open the parts search and type “fit” + “soil” + “mugwort”. 塔 is among the results, together with every other character containing the same shapes.
Open 塔 in the interactive kanji search
to expand every part down to its smallest pieces, add your own names and mnemonic stories,
or search for other characters by their parts.