Porter is a small town on the southern shore of Lake Michigan, about 50 miles southeast of Chicago. Its main claim to interest is its location inside Indiana Dunes National Park, which stretches for 25 miles along the lakeshore.
The dunes are the draw. Miles of sandy beach, forested dunes up to 60 metres high, bogs, wetlands, and oak savanna create a surprising diversity of landscape within sight of the Chicago skyline on a clear day. The park ranks eighth among US national parks for plant diversity — over 1,400 species have been recorded, including some that are threatened or endangered in Indiana.
The Dunes Succession Trail near Porter gives a good introduction to the ecology that made this area famous: Dr. Henry Cowles conducted his pioneering studies on ecological succession here in the early 1900s, essentially inventing the field. Beyond the beach, the Bailly Homestead and Chellberg Farm preserve the area's pre-industrial history, and the strange collection of Century of Progress Homes — experimental houses from the 1933 Chicago World's Fair — sit just along the shore. For the most dramatic dune experience, Mount Baldy requires a ranger-led tour but is worth it.
Porter is easily reached by train from Chicago on the South Shore Line, making the dunes a practical day trip from the city.