Museum of Science and Industry (Chicago) of Progress event. For years, visitors entered the museum through its original main entrance, but that entrance became no longer large enough to handle an increasing volume of visitors. The newer main entrance is a structure detached from the main museum building, through which visitors descend into an underground area and re-ascend into the main building, similar to the Louvre Pyramid. In 1983, due to increased attendance, the museum started construction of its underground parking lot, located in three underground levels below the front lawn. Construction of the underground parking lot was finished in the 1990s. For over 55 years,
Structure of the Spanish Army in 1989 and defend its area of responsibility. Structure of the Spanish Army in 1989 The Order of Battle of the Spanish Army in 1989 is given below. Notes: The units of the Parachute Infantry Brigade were drawn at first from the ranks of the Spanish Legion and therefore named ""Bandera"" (Flags) instead of "Battalion". By 1989 paratroopers of the brigade were directly recruited. The Legion Command oversaw the units of the Spanish Legion. Legion regiments are called ""Tercios"" and battalions ""Banderas"". Operationally Legion units were to be employed as combat reserves. The Special Operations Groups were Ranger type units that specialized