Detroit is a dynamic, diverse city with an intriguing history. It's a place world-changing inventions and groundbreaking music. Long known as the automobile capital of the world, Detroit is also famous for its distinctive Motown music sound from the 1960s. Detroit played a key role in the industrialization of America throughout the 20th century, and is ready to transform itself as technologies develop into the 21st century. It has country's largest island park within a city – Belle Isle Park. The city is the oldest in the Midwest, and the only one from which one can look south to Canada. The Ambassador Bridge, linking Detroit with Windsor (Ontario, Canada) is one of the longest international suspension bridges in the world. It is home to the world's only floating post office, the J.W. Westcott II, can be found on the Detroit River and also home to one of the tallest hotels in North America – the Detroit Marriott Renaissance Center, at 73 stories.Detroit has many world-class tourist attractions, including the Detroit Public Library; the Detroit Science Center; Detroit Zoo; Cranbrook Gardens; and the Renaissance Center.