This concrete communications and observation tower in downtown Toronto, Canada stands at 1,815 feet (553 m). When it was completed in 1976 it was the world’s tallest free-standing structure. The CN Tower is a symbol of Canadian achievement and in 1995 it was declared one of the modern Seven Wonders of the World by the American Society of Civil Engineers.
Is a temple located on the Athenian Acropolis in Greece and dedicated to the maiden goddess Athena whom the people of Athens considered their patron deity. Construction began in 447 BC when the Athenian Empire was at the height of its power and was completed in 438 BC. The Parthenon is the most recognizable enduring symbol of ancient Greece, Athenian democracy and western civilization.
The Tower of the Americas is a 750-foot observation tower/restaurant on the southeastern edge of Downtown San Antonio, Texas, USA. The tower was built as the theme structure of the 1968 World's Fair. It was the tallest observation tower in the United States until 1996 when the Las Vegas Stratosphere Tower was completed.
It was known as the RCA Building until 1988 and is today referred to as the GE building. It is also carries the nickname 30 Rock and is most famous for being the headquarters of the television network NBC.