Claim: Boston was the location of the United States' first subway system.
Evidence: Boston 's many firsts include the United States ' first public school , Boston Latin School -LRB- 1635 -RRB- , first subway system , the Tremont Street Subway -LRB- 1897 -RRB- , and first public park , Boston Common -LRB- 1634 -RRB-.