The Leaning Tower of Pisa is NOT one of the Seven Wonders of the Ancient World.

The Seven Wonders of the Ancient World were a collection of remarkable structures or monuments from ancient times that were considered to be extraordinary feats of engineering, architecture, and art. These wonders were selected by various ancient writers and travelers. The Leaning Tower of Pisa, however, does not belong to this prestigious list.

The Seven Wonders of the Ancient World are:
1. The Great Pyramid of Giza: Located in Egypt, this pyramid is the oldest and largest of the three pyramids in the Giza pyramid complex. It was built as a tomb for the Pharaoh Khufu around 2560 BC.

2. The Hanging Gardens of Babylon: These legendary gardens were said to have been built by King Nebuchadnezzar II for his wife in the city of Babylon (modern-day Iraq). However, their existence and exact location remain uncertain.

3. The Statue of Zeus at Olympia: This massive statue of the Greek god Zeus was created by the renowned sculptor Phidias and placed in the Temple of Zeus in Olympia, Greece. Unfortunately, the statue was destroyed in the 5th century AD.

4. The Temple of Artemis at Ephesus: Located in present-day Turkey, this temple was dedicated to the Greek goddess Artemis. It was an impressive structure known for its grandeur and size but was ultimately destroyed by arson in 356 BC.

5. The Mausoleum at Halicarnassus: Built in present-day Bodrum, Turkey, this mausoleum was a tomb constructed for Mausolus, the ruler of Caria. It was a magnificent structure adorned with intricate sculptures.

6. The Colossus of Rhodes: This colossal statue of the Greek titan Helios once stood at the entrance of the harbor of Rhodes, Greece. It was destroyed by an earthquake in 226 BC.

7. The Lighthouse of Alexandria: Situated on the island of Pharos in Alexandria, Egypt, this lighthouse was one of the tallest man-made structures of the ancient world. It guided ships into the harbor and was a marvel of engineering. It was eventually destroyed by earthquakes in the 14th century AD.

Conclusion:
The Leaning Tower of Pisa, although a famous and iconic structure, was not included in the list of the Seven Wonders of the Ancient World. It was built during the medieval period and is known for its distinctive tilt, caused by unstable ground.