You'll need the Assassin's Creed Odyssey Ancient Tablets scattered around ancient Greece to upgrade your ship, the Adrestia. While the resources like stone and wood are easily found, Ancient Tablets are key to it all, acting almost like unlock tokens. Without them you can't access a world of ramming capabilities, hull improvements, more damaging arrows, spears and so on.
This run down of Assassin's Creed Odyssey Ancient Tablet locations will help you find these resources, which are actually easy to get as long as you know where to look. You just have to be prepared to travel and infiltrate the odd fort or two in Assassin's Creed Odyssey. It's honest work (aside from all the killing and stealing) and before long you'll have all the Adrestia upgrades you need.
Here are the locations for all the Assassin's Creed Odyssey Ancient Tablet bundles, because thankfully you get four per stash. Sweet! Super duper Adrestia here we come.
Assassin's Creed Odyssey tips | Assassin's Creed Odyssey romance | Assassin's Creed Odyssey ancient tablets | Assassin's Creed Odyssey orichalcum | Assassin's Creed Odyssey ancient stele | Assassin's Creed Odyssey minotaur | Assassin's Creed Odyssey cyclops | Assassin's Creed Odyssey medusa | Assassin's Creed Odyssey sphinx | Assassin's Creed Odyssey Xenia questline | How to level up fast in Assassin's Creed Odyssey | How to get the Pegasus, Black Unicorn and Rainbow Unicorn skins in Assassin's Creed Odyssey| Assassin's Creed Odyssey ending explained
Kephallonia
1) Odysseus's Palace - Ithaka
Phokis
1) Prometheus and the Birth of Humankind - Sacred Lands of Apollo
2) Snake Temple - Valley of the Snake
3) Tomb of Tityos - Valley of the Snake
4) Solitude Tower - Grand Mount Parnassos (right on the border of Lake Kopais)
Boeotia
1) Temple of Athena Itonia - Mount Helikon
2) Tower of Askre - Reborn Hills
Attika
1) Burned Temple of Hera - Phaleron Sandy Bay
2) Ruined Sanctuary of Ajax - Isle of Salamis
Megaris
1) Pillar of Dionysos - Kithairon Foothills
2) Ruined Temple of Apollo - Occupied Forest of Tripodiskos
3) Zues Ephesos - Valley of King Lelex
Korinthia
1) Altar of the Cyclops - Isthmus of Poseidon
2) Ruined Temple of Zeus - Kraneion Plains
3) Ruined Temple of Apollo - Valley of the Pegasos
4) Kephisos's Sanctuary Ruins - Valley of Judgement
Achaia
1) Ruins of Helike - Poseidon's Wrath
Elis
1) Spring of Piera - Forgotten Swamps
2) Dyspontion Ruins - Forgotten Swamps
Arkadia
1) Origins of the Karyatids - Lykosoura Highlands
Argolis
1) Mycenae - Palace of Agamemnon
2) Palace of Hippomedon - Wetlands of the Hydra
3) Asine Ruins - Mount Koryphum
4) Club of Herakles - Valley of Dreams
Lakonia
1) Burned Temple of Apollo - Forest of Eurotas
Messenia
1) Palace of Aphareus - Exile Hills
Kythera Island
1) Diakofti Ruins - Pilgrim Hill
2) Mycenaean Ruins - Skandeia Bay
Messara
1) Lost Minoan Shrine - Zeus's Playground
2) Phaistos Village - Fertile Battlegrounds
Pephka
1) Zakros - Dikte Plateau
Naxos
1) Deathbed of Ariadne - Maenad's Hills
Chios
1) Anavatos Ruin - Hunted Forest of Artemis
2) Ruined Temple of Athena Poliouchos - Forest of Tears
Lesbos
1) Temple of Kybele - Vineyard Canyon
2) Ancient Sanctuary of Zeus - Vineyard Canyon
3) Ruined Sanctuary - Ancient Pearl
4) Temple Ruins - Lover's Bay
5) Lost Shrine of Poseidon - Lover's Bay
Makedonia
1) Xerxes's Sacrifice of the Nine - Unexplored Mount Pangeon
Euboea
1) Seaside Altar - Mount Dirfi
2) Apollo Temple - Forgotten Ruins of Makris
3) Altar of Poseidon - Mount Ochi