First erected in 1947 in remembrance of Soviet liberation of Hungary from Nazi forces during World War II. Over the following years, public sentiment toward the Soviets decreased to the point of revolution, which was attempted in 1956 and subsequently damaged some portions of the monument. After the 1989 transition from Communist rule to a more democratic government, the inscription was modified to read (translated from Hungarian), "To the memory of all of those who sacrificed their lives for the independence, freedom, and success of Hungary." (from Wikipedia)