A boardwalk is a promenade along a beach or waterfront. In North America, and particularly in the United States, many waterfront commercial boardwalks have become so successful as tourist attractions that the simple wooden pathways have been replaced by esplanades made of concrete, brick or other construction, sometimes with a wooden façade on the surface. An entertainment boardwalk often contains an amusement park, casinos, or hotels on a pier-like structure.[2] One of the earliest such boardwalks was designed in New Jersey and opened June 26, 1870, in Atlantic City,[3] and one of the longest is Mazatlán's Malecón, at 13 miles (21 km) of oceanfront boardwalk.[4]