[Answer] Which of these landmarks is the oldest?

Step 1 : Introduction to the question "Which of these landmarks is the oldest?"

...1. Stonehenge 2. Roman Colloseum 3. The Parthenon 4. Machu Picchu

Step 2 : Answer to the question "Which of these landmarks is the oldest?"

Stonehenge - Stonehenge is one of the oldest archeological sites on Earth. The prehistoric structure, located on Salisbury Plain in England, dates between 3000 and 2000 BCE. Of the monuments on this list, the youngest is Machu Picchu, which was built around 1450 CE. The Roman Colosseum was built around 70 CE, while the Parthenon was constructed in 447 BCE. Despite its remarkable age, Stonehenge isn’t the oldest of the world’s archeological sites. Tell es-Sultan in Jericho and Göbekli Tepe in Turkey date back around 10,000 years, while Theopetra Cave in Greece is home to the likeliest oldest known human-made structure on Earth, which dates back some 135,000 years.:

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