訪ねる
たずねる (tazuneru)
to visit; to call on
verb (ichidan)
Example
来週、友達の家を訪ねるつもりです。
らいしゅう、ともだちのいえをたずねるつもりです。
Raishuu, tomodachi no ie wo tazuneru tsumori desu.
I plan to visit my friend's house next week.
More formal than 行く when visiting someone. Often used for visiting people at their homes or workplaces.