Top 3 in Top 10 best cruise routes in the US.
America's most beautiful structures line up like soldiers across from Lake Michigan, starting north at Hollywood and reaching south through Jackson Park, extending for 26 miles. The buildings downtown are home to celebrities, from the monolithic stairs of the Willis Tower – formerly the Sears Tower and the tallest building in the world – to the opulence of the Belle Époque in Burnham and Root's Rookery, to Mies van der Rohe's post-Bauhaus cars. It was named the greatest architectural street in the world.