The first purpose-built roller coaster, <a href="https://en.wikipedia.org/wiki/LaMarcus_Adna_Thompson" id="mwrA" rel="mw:WikiLink" title="LaMarcus Adna Thompson">LaMarcus Adna Thompson</a>'s "<a href="https://en.wikipedia.org/wiki/Switchback_Railway" id="mwrQ" rel="mw:WikiLink" title="Switchback Railway">Switchback Railway</a>", opens in New York's <a href="https://en.wikipedia.org/wiki/Coney_Island" id="mwrg" rel="mw:WikiLink" title="Coney Island">Coney Island</a> amusement park.