During the late 19th century, several Gilded Age mansions reflecting the wealth of industry and shipping magnates were built east and west of the current downtown, along the major avenues of the Woodward plan. Most notable among them was the David Whitney House located at 4421 Woodward Avenue, which became a prime location for mansions. During this period some referred to Detroit as the Paris of the West for its architecture, grand avenues in the Paris style, and for Washington Boulevard, recently electrified by Thomas Edison. The city had grown steadily from the 1830s with the rise of shipping, shipbuilding, and manufacturing industries. Strategically located along the Great Lakes waterway, Detroit emerged as a major port and transportation hub.