Seven Wonders of the World

The Seven Wonders of the World was a term applied to a number of man-made structures from Earth's history. The Eleventh Doctor listed it when going through things "important" about the number seven when the Shakri cubes started their countdown with that number. (TV: The Power of Three)

An attempt was made by Pholonius Ginn to collect them all and sell off them to the highest bidder on G-bay. (COMIC: Minus Seven Wonders)

The wonders

 * The Great Pyramids of Cheops
 * The Temple of Diana at Ephesus
 * The Colossus of Rhodes
 * The statue of Zeus at Olympia
 * The Mausoleum
 * The Pharos Lighthouse at Alexandria
 * The Hanging Gardens of Babylon (COMIC: Minus Seven Wonders)