Information: - Mission 66 was a United States National Park Service ten-year program that was intended to dramatically expand Park Service visitor services by 1966, in time for the 50th anniversary of the establishment of the Park Service. - The Gettysburg Battlefield is the area of the July 13, 1863, military engagements of the Battle of Gettysburg within and around the borough of Gettysburg, Pennsylvania. Locations of military engagements extend from the site of the first shot at Knoxlyn Ridge on the west of the borough, to East Cavalry Field on the east. A military engagement prior to the battle was conducted at the Gettysburg Railroad trestle over Rock Creek, which was burned on June 27. - The Cyclorama Building at Gettysburg was an historic modernist concrete and glass Mission 66 building dedicated November 19 , 1962 by the National Park Service ( NPS ) to serve as a Gettysburg Battlefield visitor center , to exhibit the 1883 Paul Philippoteaux Battle of Gettysburg cyclorama and other artifacts , and to provide an observation deck ( replacing the 1896 Zeigler 's Grove observation tower ) . The building was demolished in 2013 . - An observation deck, observation platform or viewing platform is an elevated sightseeing platform usually situated upon a tall architectural structure such as a skyscraper or observation tower. Observation decks are sometimes enclosed from weather, as many skyscraper decks, and may include coin-operated telescopes for viewing distant features. - Virginia (, officially the Commonwealth of Virginia) is a state located in the Mid-Atlantic region of the United States, as well as in the historic Southeast. Virginia is nicknamed the "Old Dominion" due to its status as the first colonial possession established in mainland British America, and "Mother of Presidents" because eight U.S. presidents were born there, more than any other state. The geography and climate of the Commonwealth are shaped by the Blue Ridge Mountains and the Chesapeake Bay, which provide habitat for much of its flora and fauna. The capital of the Commonwealth is Richmond; Virginia Beach is the most populous city, and Fairfax County is the most populous political subdivision. The Commonwealth's estimated population is over 8.3 million, which is slightly less than New York City. - The Army of the Potomac was the principal Union Army in the Eastern Theater of the American Civil War. It was created in July 1861 shortly after the First Battle of Bull Run and was disbanded in June 1865 following the surrender of the Confederate Army of Northern Virginia in April. - Pennsylvania (Pennsylvania German: "Pennsylvaani"), officially the Commonwealth of Pennsylvania, is a state located in the northeastern and Mid-Atlantic regions of the United States. The Appalachian Mountains run through its middle. The commonwealth borders Delaware to the southeast, Maryland to the south, West Virginia to the southwest, Ohio to the west, Lake Erie and the Canadian province of Ontario to the northwest, New York to the north, and New Jersey to the east. - The Battle of Gettysburg (with an sound) was fought July 13, 1863, in and around the town of Gettysburg, Pennsylvania, by Union and Confederate forces during the American Civil War. The battle involved the largest number of casualties of the entire war and is often described as the war's turning point. Union Maj. Gen. George Meade's Army of the Potomac defeated attacks by Confederate Gen. Robert E. Lee's Army of Northern Virginia, ending Lee's attempt to invade the North. - The National Park Service Organic Act (or simply "the Organic Act" within the National Park Service, conservationists, etc.) is a United States federal law that established the National Park Service (NPS), an agency of the United States Department of the Interior. The Act was signed into law on August 25, 1916, by President Woodrow Wilson, and is located in Title 16 of the United States Code. - George Gordon Meade (December 31, 1815 November 6, 1872) was a career United States Army officer and civil engineer involved in the coastal construction of several lighthouses. He fought with distinction in the Second Seminole War and the MexicanAmerican War. During the American Civil War he served as a Union general, rising from command of a brigade to command of the Army of the Potomac. He is best known for defeating Confederate General Robert E. Lee at the Battle of Gettysburg in 1863. - The Gettysburg Railroad was a railway line in Pennsylvania that operated from 1858-1870 over the 17 mile (27km) main line from the terminus in Gettysburg to the 1849 Hanover Junction. After becoming the Susquehanna, Gettysburg & Potomac Railway line in 1870, the tracks between Gettysburg and Hanover Junction became part of the Hanover Junction, Hanover and Gettysburg Railroad in 1874, the Baltimore and Harrisburg Railway in 1886, and the Western Maryland Railway in 1917. - The National Park Service (NPS) is an agency of the United States federal government that manages all U.S. national parks, many American national monuments, and other conservation and historical properties with various title designations. It was created on August 25, 1916, by Congress through the National Park Service Organic Act and is an agency of the United States Department of the Interior. The NPS is charged with a dual role of preserving the ecological and historical integrity of the places entrusted to its management while also making them available and accessible for public use and enjoyment. - The Army of Northern Virginia was the primary military force of the Confederate States of America in the Eastern Theater of the American Civil War, as well as the primary command structure of the Department of Northern Virginia. It was most often arrayed against the Union Army of the Potomac. - Robert Edward Lee (January 19, 1807 October 12, 1870) was an American general known for commanding the Confederate Army of Northern Virginia in the American Civil War from 1862 until his surrender in 1865. The son of Revolutionary War officer Henry "Light Horse Harry" Lee III, Lee was a top graduate of the United States Military Academy and an exceptional officer and military engineer in the United States Army for 32 years. During this time, he served throughout the United States, distinguished himself during the MexicanAmerican War, and served as Superintendent of the United States Military Academy. - Gettysburg is a borough and the county seat of Adams County in the U.S. state of Pennsylvania. The Battle of Gettysburg (1863) and President Abraham Lincoln's Gettysburg Address are named for this town. The town hosts visitors to the Gettysburg National Battlefield in the Gettysburg National Military Park. As of the 2010 census, the borough had a population of 7,620 people. - An observation tower is a structure used to view events from a long distance and to create a full 360 degree range of vision. They are usually at least tall and made from stone, iron, and wood. Many modern towers are also used as TV towers, restaurants, or churches. The towers first appeared in Germany at the end of the 18th century, and their numbers steadily increased, especially after the invention of the elevator. Given the paragraphs above, decide what entity has the relation 'owned by' with 'gettysburg national military park'.
A:
cyclorama building at gettysburg