Explanation

The Great Pyramid of Giza, the largest and oldest pyramid are the only ancient wonders

The Great Pyramid of Giza located Necropolis in Egypt

it was constructed  between 2584 to 2561 BC

it is the Massive tombs of Egyptian pharaohs

the seven traditional wonders are:

1. the Great Pyramid of Giza: Giza Necropolis, Egypt
2. the Colossus of Rhodes located in Rhodes
3. Greecethe Lighthouse of Alexandria located in Alexandria, Egypt
4. the Mausoleum at Halicarnassus located Bodrum, Turkey
5. the Temple of Artemis located Near Selçuk, Turkey
6. the Statue of Zeus at Olympia located Olympia, Greece
7. the Hanging Gardens of Babylon is located in Hillah or Nineveh, Iraq 

while

The Taj Mahal is the Sixth Wonder of the World.