This begins a two week visit to Virginia focussing on the historical sites of colonial Williamsburg. The first image is of the entrance to the Palace Garden

Made in Switzerland by Atelier Graphique, H. Vontobel, Feldmeilen
The description states:
Governor’s Palace Garden
Williamsburg, Virginia
A view of the formal ballroom garden and the ballroom wing, added in 1751, of the Goverrnor’s Palace.
–As indicated in the caption, the postcard was made in Switzerland and imported for sale as a souvenir at the Williamsburg site. The style of the card indicates a likely date of the 1950s.