La Défense is a station of the Paris Métro, RER, and Transilien suburban rail lines. It is located underneath the Grande Arche building in La Défense, the business district just west of Paris. The station connects the RER Line A to the Metro Line 1 station La Défense – Grande Arche (since 1992), the T2 tramway (since 1994), and an SNCF (Transilien) train station. It is also attached to a major shopping centre.