Sumeru is the nation that worships Lesser Lord Kusanali, the Dendro Archon nd God of Wisdom. It is the city of scholars known for its wisdom. Archon Quest Chapter III takes place in this region. Sumeru has the most number of viewpoints located all around compared to other nations in Teyvat. I managed to uncover 44 viewpoints but there could be more.
Entry 1: Avidya Forest: The City Where All Wisdom Resides
This viewpoint is located by the Teleport Waypoint south of Sumeru City and west of Gandharva Ville.
Entry 2: Gandharva Ville: The City Above the Forest
Entry 3: Vimara Village: The Village by the River
This viewpoint will only appear after completing The World of Aranara quest. You won’t see this entry in the Archive until it’s collected.
Entry 4: Ardravi Valley: The Harbor Betwixt the Two Trees
Entry 5: Lokapala Jungle: Memory of Alcazarzaray
Entry 6: Pardis Dhyai: The Garden of Deep Thought
Entry 7: Caravan Ribat: The Frontier Beneath the High Wall
Entry 8: Devantaka Mountain: The Colossus Watching Devantaka
Entry 9: Apam Woods: Varunastra
Entry 10: The Rain’s End: The Rain’s End
Entry 11: Vanarana: The World of the Aranara
Entry 12: Old Vanarana: Nursey of Lost Dreams
Entry 13: Sand-Embraced Home: The Littlest Dream
Entry 14: Land of Grounded Dreams: The Garden’s New Sprouts
Entry 15: Land of Lower Setekh: The Barren Land Where Sand Dances
Entry 16: Land of Lower Setekh: Towers of Betrayal
Entry 17: Refugee Shelters: Aaru Village
Entry 18: Thamud Oasis: Land of Lower Setekh
Entry 19: The Mausoleum of King Deshret: The Mausoleum of King Deshret
Entry 20: The Thousands of Entombed Chambers: Hypostyle Desert
Entry 21: Khaj-Nisut: Eye of the Sands
Entry 22: Duat Hall: The Bottomless Hall
Entry 23: The Mausoleum of King Deshret: Aaru’s Shut
Aaru’s Shut can only be accessed when you do the Dual Evidence quest until the end. If you have done it and would like to go back to this viewpoint, you can use the Scarlet Sand Slate from the inventory, choose the third option on the left side, then select either Aaru’s Shut or Great Hall of Truths.
Entry 24: Valley of Dahri: The Giant of the Wind-Eroded Valley
Entry 25: Dar al-Shifa: Lifeless Dar al-Shifa
Entry 26: Land of Lower Setekh: Verdant Fields’ Vantage Point
Entry 27: Tanit Camps: Mt. Damavand, Where Sandstorms Never Cease
Entry 28: The Sands of Al-Azif: The Moonblue Canals
Entry 29: Tanit Camps: The Tanit Encampment
Entry 30: Safhe Shatranj: The Palace Abandoned by the Gods
Entry 31: Bayt Al-Muazzam: The Temple of Buried Dominion
Entry 32: Wenut Tunnels: Wenut Tunnels
Entry 33: Apep’s Resort: The Lost Hermitage
Entry 34: Debris of Panjvahe: The Forgotten River Valley
Entry 35: Wadi Al-Majuj: The Gap of the Hidden Ruins
Entry 36: Bayt Al-Sukr: The Court of Dried Springs
Entry 37: Bayt Al-Hayah: The Court of Withered Life
Entry 38: Wounded Shin Valley: Where a Titan’s Shins Were Broken
Entry 39: Liloupar’s Cell: Liloupar’s Gaol
Entry 40: The Orchard of Pairidaeza: The Paradise of Eternal Peace
Entry 41: Hills of Barsom: Elder Pine Atop the Wasters
Entry 42: Hangeh Afrasiyab: Forge of the Abandoned Foundry
Entry 43: Hangeh Afrasiyab: Gate of Everlasting Mourning
Entry 44: Tunigi Hollow: Valley of the Unsullied
Entry 45: Harvisptokhm: Vourukasha Oasis
Entry 46: Chemin Oublie: Sourcewater Nation