A pretty, easy, scenic stroll.

Royal Roads University campus "encompasses 565 acres of breathtaking
beauty just outside the city of Victoria on Vancouver Island. We are
located on the shores of Juan de Fuca Strait overlooking the Olympic
Mountains in a park that has been designated a National Historic Site
by the federal government. Our grounds include three renowned formal
gardens (the Italian, the Japanese and the Rose garden) and an old
growth forest. Our campus is criss-crossed by walking, cycling and
hiking trails and is home to peacocks, deer and other wildlife. Our
grounds and gardens are open daily for the public to enjoy." (from the
website, www.royalroads.ca

The letterbox is in the Japanese garden. If you go looking for it, do
check out the Italian garden and Hatley castle while you are there!