[Ans] Which of these world famous structures is the oldest?

Step 1 : Introduction to the question "Which of these world famous structures is the oldest?"

The Parthenon is a former temple on the Athenian Acropolis, Greece, dedicated to the goddess Athena. Construction began in 447 BC during the height of the ancient Greek Empire. It is the most important surviving building of Classical Greece, generally considered the zenith of the Doric order. The temple sits high atop a compound of temples known as the Acropolis of Athens. Throughout the centuries, the Parthenon withstood earthquakes, fire, wars, explosions and looting yet remains, although battered, a powerful symbol of Ancient Greece, Athenian democracy and Western civilization.

[Answer] Which of these world famous structures is the oldest?

Step 1 : Introduction to the question "Which of these world famous structures is the oldest?"

...The Parthenon is a former temple on the Athenian Acropolis, Greece, dedicated to the goddess Athena. Construction began in 447 BC during the height of the ancient Greek Empire. It is the most important surviving building of Classical Greece, generally considered the zenith of the Doric order. The temple sits high atop a compound of temples known as the Acropolis of Athens. Throughout the centuries, the Parthenon withstood earthquakes, fire, wars, explosions and looting yet remains, although battered, a powerful symbol of Ancient Greece, Athenian democracy and Western civilization.

[Answer] This Wyoming ghost town got its start in 1867 and has more than 25 historic structures preserved.

Step 1 : Introduction to the question " This Wyoming ghost town got its start in 1867 and has more than 25 historic structures preserved. "

...1. South Pass City 2. Kirwin Mine 3. Old Trail Town 4. Spooky City

[Answer] 9. I am standing on top of one of the oldest and biggest man made structures on the planet which is at least 6,352 km (3,948 miles) long. What is it?

Step 1 : Introduction to the question "9. I am standing on top of one of the oldest and biggest man made structures on the planet which is at least 6,352 km (3,948 miles) long. What is it?"

...1. The Great Pyramid at Giza 2. The Great Wall of China 3. The Empire State Building 4. The Hoover Dam Construction of the great wall started in the 7th century BC, with various small states in Northern China building wall. The walls were adjoined during the Qin Dynasty and extended upon during the Ming Dynasty, the renovation and extension, which resulted in the wall we see today, lasted over two thousand years.