On the northern tip of Skyros, near the beach of Palamari, excavations since the 1980s have uncovered a Bronze Age settlement occupied from roughly 2800 to 1500 BCE. This is not a handful of sherds and a wall foundation — Palamari was a substantial town with planned streets, defensive walls, two-storey buildings, and clear evidence of long-distance trade connections with other Aegean civilisations.
The site is open to visitors and the excavations are ongoing, which means you may find archaeologists at work during summer months. The interpretive signage is adequate, and the location — on a low bluff above a beach with a view across to Evia — is beautiful. Combining a visit to the site with a swim at Palamari beach is an easy half-day from Skyros Town.