The Pyramids of Greece (not a typo).
Egypt has its pyramids, of course, but few know the Greek pyramids, also known as the Pyramids of Argolis. These are several structures located in the plain of the Argolid in Greece. The best known of these is the Pyramid of Hellinikon. In the time of the geographer Pausanias it was considered to be a tomb. Twentieth century researchers have suggested other possible uses, such as a watch tower. The dating is unknown, but some believe the Pyramid of Hellinikon (near the Argolid village of Cephalari, worth a visit to it’s springs and cave) may be as nearly 3000 years old, especially given their Cyclopean wall construction, indicative of, at least, Myceanean era (approx. 1200 BC).
Another structure most sources don’t refer to as a pyramid is the more stepped-like pyramid, built in the 8th Century BC, known as the Menelaion (pictured with CelebrateGreece.com logo) at Therapni, Greece. Named after Menelaos, King of Sparta (brother of Agamemnon of Mycenae), husband of the infamous Helen of Troy, it has been also called a Temple to Helen and a Shrine to Helen and Menelaos. Overlooking the Eurotas River valley and the modern (Doric) city of Sparta, it commands the most impressive view of the Spartan plain. Watch short video of the Menelaion.
The Menelaion locates the Mycenaean Bronze Age city that once stood on the hill of Therapne and may be a likely candidate for the Homeric Sparta (Lacedaemon) of the Iliad.