Which preposition to use with bourgs

to Occurrences 2%

After breakfast we began the ascent of Mont Cenis, and I made the whole way from Lans-le-Bourg to the Hospice of Mont Cenis, that is, the whole ascent, a distance of twenty-five Italian miles, on foot.

in Occurrences 1%

Next morning, the 8th, I awoke at Bourg in High Savoy.

with Occurrences 1%

The first experiments were made at Petit-Bourg with a pleasure yacht.

of Occurrences 1%

A general air of neatness and comfort pervaded the place, it being as unlike a continental European town, south of the Rhine, in this respect, as possible, if indeed we except the picturesque bourgs of Switzerland.

Which preposition to use with  bourgs