Ancient Pyramids exist not only in Egypt, but in many places around the world. The pyramids don't all follow the same shape, but almost always have a geometric pyramid shape to their building.
Pyramid of Meidun
The Great Pyramid
NOTE: The 'pyramids' of Xi'an are actually large pyramid-shaped mounds of earth
Pyramid of Falicon
Pyramid of Hellinikon
Pyramid of Cestius
Pyramids of Güímar
NOTE: Visočica Hill is a pyramid-shaped hill and is debated whether to be considered a pyramid officially.
NOTE: The Falicon Pyramid is extremely Egyptian in design, but is much smaller and seems to have lost the top.
NOTE: The Pyramid of Hellinikon is almost completely destroyed and is considered a pyramid from the fact that the sides slant upward and would eventually meet to create one, or suddenly end at a flat top.