A historic funicular railway in Lisbon, the Gloria, derailed and crashed on Wednesday, resulting in at least 15 fatalities and 18 injuries. The incident occurred on a line popular with tourists, and some foreign nationals were among the casualties. Portugal’s government has declared a day of national mourning. Authorities have launched a formal investigation to determine the cause of the accident, which has been described by Lisbon’s mayor as a “tragic, tragic incident.” The line, which opened in 1885, transports millions of people annually.