besuchen
to visit
To go or travel to a person in order to spend time with them.
Am Wochenende besuche ich meine Großeltern.
I'm visiting my grandparents on the weekend.

to visit
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to visit
To go or travel to a person in order to spend time with them.
Am Wochenende besuche ich meine Großeltern.
I'm visiting my grandparents on the weekend.

The verb 'besuchen' (to visit/attend) has the prefix 'be-' and is therefore inseparable. The prefix stays firmly attached to the verb in all sentence forms and tenses.
Er besuchte letztes Jahr einen Programmierkurs.
He attended a programming course last year.
'Besuchen' (to visit/attend) is always used with an accusative object and does not need a preposition. You ask: Whom or what are you visiting/attending?
Morgen besuche ich eine interessante Ausstellung.
Tomorrow I'm visiting an interesting exhibition.
The exact meaning of 'besuchen' (to visit/attend) can be recognized from the object. A person as the object means spending time with them. A place or event as the object means going there or taking part.
Ich besuche meinen Freund Paul.
I'm visiting my friend Paul.
In the context of education and culture, 'besuchen' (to attend/visit) is often combined with institutions or events. Typical examples are: 'eine Schule besuchen' (to attend a school), 'eine Universität besuchen' (to attend a university), 'einen Kurs besuchen' (to attend a course), 'ein Museum besuchen' (to visit a museum), or 'eine Vorlesung besuchen' (to attend a lecture).
Mein Sohn besucht seit August die Grundschule.
My son has been attending elementary school since August.
to go
'gehen' and 'besuchen' can both have to do with going to a person or a place. 'gehen' mainly describes the movement, or the fact that you leave one place and go to a destination. 'besuchen' describes the purpose: you go or travel to a person in order to spend time with them, or you attend a place or an event. Learners can easily confuse the words because you often go somewhere in order to visit someone. If only the movement is important, 'gehen' fits. If the contact, the stay, or the participation is important, 'besuchen' fits.

Am Sonntag besuchen wir meine Großeltern auf dem Land.
On Sunday, we are visiting my grandparents in the countryside.
Nach der Arbeit gehe ich zu Fuß nach Hause.
After work, I walk home.