Visit of, to, or at a research department?

A non-native speaker needs help with the following phrase to be used in the acknowledgments section of a research paper:

"Parts of the this research were conducted during a visit of the International Law Group of Kalamazoo Law School."

All authors of the paper visited that place. I'm especially not sure whether it should be "visit of", "visit to" or "visit at". The length of the visit in question was six months. Maybe I haven't even listed the correct option.

Solution 1:

You can write

Parts of this research were conducted during a visit to the International Law Group of Kalamazoo Law School.

In general, you can pay a visit to a person or a place.

Solution 2:

I would simply go with "This work was conducted in part at the International Law Group of Kalamazoo Law School."

Solution 3:

Visit of sounds like it should be followed by who was doing the visit, for example:

The visit of the president went flawlessly, the president is safe.

Visit at and visit to both sound fine to me, with the minor difference that one of them implies the distance traveled, like in the following examples:

I went to Europe last year. = My visit to Europe last year was great.

versus

I was in Europe last year. = My visit in Europe last year was great.

It's difficult to determine which of these you need in your sentence, as you haven't provided enough context, but what you've currently got there seems correct, apart from a minor article mistake:

Parts of the this research were conducted during a visit to the International Law Group of Kalamazoo Law School.