Sudan has more pyramids than Egypt, and steeper ones
Roughly 255 pyramids rise from the Nile in Sudan — more than double Egypt's count, and built at a sharper, riskier angle.
Ask someone to picture a pyramid and they'll picture Giza. But travel a few hundred miles south along the Nile, into modern Sudan, and you'll find something Egypt doesn't have: roughly 255 pyramids built by the kings and queens of ancient Kush, more than double the number Egypt ever built.
They look different on purpose. Egyptian pyramids spread wide at the base and climb at a gentle 40 to 50 degrees. Kushite pyramids do the opposite — narrow footprints, steep sides rising near 70 degrees, some barely six meters across at the bottom. They're less stable structurally, and the builders knew it. They built tall and narrow anyway, favoring a silhouette over an engineering safety margin.
The Kushite kingdom ruled a stretch of the Nile for over a thousand years, at one point conquering Egypt itself and ruling it as pharaohs. Their pyramids at Nuri and Meroë kept being built for seven centuries after Egypt had stopped building its own.
In the 1830s an Italian treasure hunter named Giuseppe Ferlini demolished dozens of them from the top down, hunting gold. He found jewelry in at least one. He is remembered, when he's remembered at all, as the reason we lost pyramids nobody outside Sudan had heard were there to lose.