Sir Alexander Aitkin was deputy surveyor general and later the first surveyor general of Upper Canada

Upper Canada

The Province of Upper Canada was a political division in British Canada established in 1791 by the British Empire to govern the central third of the lands in British North America and to accommodate Loyalist refugees from the United States of America after the American Revolution...

.

He was responsible for surveying

Surveying

See Also: Public Land Survey SystemSurveying or land surveying is the technique, profession, and science of accurately determining the terrestrial or three-dimensional position of points and the distances and angles between them...

 and creating the first city plan for Toronto

Toronto

Toronto is the provincial capital of Ontario and the largest city in Canada. It is located in Southern Ontario on the northwestern shore of Lake Ontario. A relatively modern city, Toronto's history dates back to the late-18th century, when its land was first purchased by the British monarchy from...

 and made plans for the York Harbour in 1793.

Lot Street, later to be renamed Queen Street, was the first concession street in York. The original street was 6,600 feet or 1.25 miles (approx. 2 km) in length.