Other forms: revisited; revisiting; revisits
If you revisit a city, you travel there for a second (or subsequent) time. If you revisit the idea of learning German, you reconsider it.
To literally revisit a place is simply to go there again: "I can't wait to revisit New York City — I didn't get to see the Statue of Liberty this time!" You'll find this verb used even more often to mean "consider again, or from a different perspective." So you could revisit New York, and also revisit your plan to see the Statue of Liberty, deciding to see a Broadway play instead.