Seadog Cruises, Chicago

Since 1996, the staff at Seadog Cruises has welcomed explorers aboard sophisticated, open-air speedboats for city tours. Over the years, they’ve led more than two million sightseers through Baltimore and Chicago on cruises that elucidate city histories, paying special attention to landmarks such as Baltimore’s Naval Reserve Center and Chicago’s Tribune Tower. Their fleet of sea crafts uses low-sulfur diesel and a four-stroke engines that produce lower emissions than older models, allowing eco-conscious passengers to rest easy and fish to finally open their windows for some fresh water.