Bitumen Wells and Lake

One of Zakynthos's most unusual natural curiosities, this site features ancient bitumen (natural tar) springs that have been bubbling up from the earth for centuries, historically used by locals and documented by early travelers who marveled at the boiling, dark pools. It's a genuinely strange and otherworldly spot — the kind of place that makes you stop and wonder how it ended up on a Greek island. Pair a visit with the nearby lake for a fuller picture of this surprisingly rich corner of Zakynthos's interior plain.