EDIT: I have turned this topic into a place where we, as Historical fans, can efficiently gather and support projects in these themes in Lego Ideas; so please feel free to add any that you find and I will amend this original post.
If you like any of the projects listed, please consider supporting them over on Lego Ideas.
Have you all seen these? Thoughts?
Last Update: 18th June 2020.
Medieval Blacksmith by Namirob. We made it! Namirob's Medieval Blacksmith is going to be made into a set.
The Castle in the Forest by @povoq. - This has achieved support and fingers crossed, will be made into a set!
Historically Accurate Rome by daevead. - This has achieved support needed.
Brickwest Studios by Bricky_Brick @paokus. - Another 10k achievement from Bricky_Brick. That's 4 now, including the recent Pirate Bay set.
Ending Soon (URGENT VOTES NEEDED):
The Medieval Blacksmith by Cholmberg1.
Medieval House (2999 Pieces) by llllllllll. (sic. I have not made a mistake here with the username lol).
Medieval Farm by cubeous.
The Grand Colosseum by jofra-imperial.
Nearly There (Needs more votes):
The Bakery by Bricky_Brick. @paokus
Medieval Blacksmith Shop by LEGO ScapeSculptureDesign @Ben Pitchford.
Classic Castle by DERBOOR.
Aging Entries (Needs a boost):
Viking longship by Beñat.
Black Falcon Stronghold by Xman.
Modular Wild West Saloon by joefreak2003.
Siege the castle ! by @povoq.
Trolls's Siege Brachiosaurus by @Destrier.
Medieval Knight House by Namirob.
The Fortress by Gandalf54.
Colosseum (Architecture Style) by SkyWalter.
Medieval Harbor by Namirob. - I love this. It's beautful.
Medieval market by lennert476.
Greek Temple by Imperator49.
Kinetic Saloon Simple by brickster0404.
Desert Palace by SirMiniLasha.
The King’s Castle Chess Set (2 in 1) by FormidableSouthernTiger.
Lego HeroQuest by KingGloriousSquirrel.
Enchanted Haven by GondorSoldier.
Rysendor's Island by Lego Landon.
Medieval Castle by Lego fan 99.
Viking longship by Beñat.
Medieval Woodcutter's Cottage by Banana_Guy03.
Adventures of Robin Hood by siuliano.
The King's Castle Gatehouse by @Jcreations912.
The Old Watchtower by HP_Brixxter.
Archers Tower by RyszardBosiak.
Cliffside Villa by OrientExpress26.
Medieval Cottage by Lego User.
Medieval Town Hall by HP_Brixxter.
Studwalder Castle (Modular Castle) by HP_Brixxter.
Secret of the Castle by Alpine Builder.
Sage's Library by SMARLIN.
The Argo, Legendary Greek Ship by Kropotin_vl.
Medieval Tower by 1965MGTFB.
Western Saloon by lachie1023.
Forest Fortress by Blocker007.
Princess June's Castle by legolux1973 @legolux1973.
House of the Samurai by hischen.
Fantasy Era Medieval House - Here Comes Trouble by l_hendriksen.
Viking Longship with Working Catapult by legomountainfanatic.
Classic Fairytale Castle by Maxence.
Roman Chariot Racing Stadium by brickster0404.
Medieval Dice Tower by El_Skutto (a bit unconventional, but it fits!).
Mini LEGO Kit - The Mighty Castle by Dcomprime76 (a miniature scale entry).
The Modular Knight's Castle by @klockizbroda.
Harbrick Castle by kylav.
Royal Knight Harbor Outpost by BrickJohnny.
Viking Hall by Heimdallsen.
Coyote Canyon by BrickJohnny.
Windmill Defense by Banana_Guy03.
Forgotten Fantasy Castle by DutchLegoMan.
Medieval Stable by Banana_Guy03.
Chromed Classics by MinifigInSpace.
The Medieval Village by Danthelegoman.
A Truly Wild Western Town by MinifigInSpace.
Tolkien by BrickGallery.
Medieval Watermill by Witz Bricks.
Mini "Emerald Dream" by Lionard.
Ancient Temple by Blocker007.
Brickville Tavern by momirsarac.
Medieval Dock House by LEGO ScapeSculptureDesign @Ben Pitchford.
Fantasy Castle (micro-scale) by Timiny Cricket.
Lava Castle (Microscale) by BrickDesignerNet.
LEGO Robin Hood by @Jcreations912.
The Mountain Windmill by Hanwasyellowfirst.
Hidden Greek Temple by DutchLegoMan.
Soutou Tenshu, Japan's Forgotten Past by Horlack @Horlack Bricks.
Lord of the Rings Trilogy - Modular by BooCrackers12.
Fairy Tale House by farmfarm.
Castle Bridge Stone by @Master0889.
Lego Medieval Farmer Village by Luuknijman.
Tower of Three Wizards by MaverickBrick.
Minas Tirith by @GJC15344.
Medieval Guard House by Micro_Model_Maker, aka @legoMoccer.
Roman temple by ROMVLVS.
Wizards Keep by Woligan.
Castle Mellori by Magiclaw.
Four Swords Inn by Magiclaw.
Medieval Windmill by Neon5.
Medieval Windmill and Barn by BooCrackers12.
Redbrick Outpost by GondorSoldier.
Sheriff's Office by Angryclone.
Druid Gathering in the Forest by Cromone.
Monrepos by Orbiter88.
Lion Knight's River Outpost by HP_Brixxter.
The Wizard Tower by AdrienClochere.
The Legend of Zelda BotW: Hyrule Castle by BrickGallery.
Castle Outpost by xXgGhostXx.
Mighty Fortress by hischen.
Medieval Outpost by LEGO ScapeSculptureDesign @Ben Pitchford.
Miner's Mountain by BeatBlocks.
English Fort by Klarinik.
Merlin's house by Davy_92.
Olivia’s Get-Away by PeetersKevin @Perterz.
Lighthouse of Alexandria by MA_bricks.
Red Badger Border control by Neon5.
Wizard’s forest house by Ranger03.
Merlin's Tower by George Brickman.
Wizard Tower by DominikQN.
Plundering the Ancient Fortress by Bricks_Of_Tomorrow.
Medieval House in the Forest by BooCrackers12.
Medieval Puppet Show by Ben.Daly.
The Wizard’s House by Michele16.
Lion's Mountain Gate by ErockBrick.
The Mill by J-Bricks1.
Viking Longship (Knarr) Overseas Raider by jbmakemson.
Castle Waterrock by Egol Okkas.
The Conquest of the Outpost by Davy_92.
Jason and the Argonauts - Triton by Justspb.
The Great Kingdoms Gate by KAJAKSZATANA.
The Black Knight's Castle by Alessandro 28.
Old West General Store by J-Bricks1.
Tribute to the King by frederic.q99.
The Fortress by Crossway_Studios.
Nobleman's House by DominikQN.
The Dragon Attack by Jcreations912.
Heailenregarr Outpost by @DanDelie.
Medieval Inn by DominikQN.
S.P.Q.R. Castrum - Microscale Roman Fortress by BriKKone.
The Witches' Lair by Alessandro 28.
The Satyr's House by Silver42.
Medieval Siege Tower - Belfry by VamosYimmy.
The Prancing Pony Inn by BriKKone.
The Dragon and the Knight by Proteasome.
Mediterranean Coastal Fort of the Knights by VamosYimmy.
Ancient Roman Warship by VamosYimmy.
The Parthenon by Mattix creations.
Castle Chess Set by BricKatai.
Medieval Cottage by BrickyHead.
Medieval Marketplace by DominikQN.
The Water Mill by ricbuilder225.
The Mythical Camelot Castle by BrickHammer.
Wolfpack Hideout - Old King's Castle! by @tomaaki.
Wizard's Room by Andrew Bricksen.
Raven Knight’s Castle by MrPotatoHead.
Outpost Defence by SirSurprisedPoodle.
Lord of the Rings Balrog and Gandalf by Alexmorsilla_8413.
Wolfpack Fortress by Mefju.
Attack On The Village by Crossway_Studios.
Roman Warship by Iyan Ha.
Medieval Observatory by SMARLIN.
Old Castle. by MasterOGEL.
Ninja Outpost by Greenflame24.
King's Crown Carriage by VamosYimmy.
Rock Diamond Sea Castle by Trixi van Park.
Ironbeard Dwarf House by ErockBrick.
Medieval Market Village by Commander Brick.
Siege of Troy by Haluk Skywalker.
Viking Warrior Temple by HammerofHenfryn.
Temple of Horus by daevead.
In the Hall of the Mountain King by RatAHatHat.
Medieval Restaurant by tm.bricks.
Viking Dwelling by beforekilling.
Fort Iron Cactus by JaminStar.
The Golden Hall of Edoras by BrickHammer.
Fantasy Castle by @Jcreations912.
Ancient Indian Fort Watchtower by TheDude98.
Waytt McLego Rescue by Brick_come92.
Medieval Farm House by @Jcreations912.
Gargamel's House by ArchiZ.
The Shire, the Hobbithole of Frodo and Bilbo Baggin's by TB Brickcreator.
Tower Outpost by Iain McCarthy.
Lord of the Rings: Edoras by theLOTRbuilder.
White Stallion Tavern and Inn by Andrew Bricksen.
The Tower of Barad-dúr by theLOTRbuilder.
Lion Castle by Hsiao1.
Wolfpack Castle by enowicki_AFOL. @enowickiafol
Dinomads by brickster0404.
Mountain Monastery by BrickHammer.
Whistling Past the Old Orc Watch Tower Through the Ancient Bog by Captain Key.
The Medieval Cottage by theLOTRbuilder.
The Acropolis of Athens by AlphaBricks.
Medieval Bakery by Dorino Dorino.
Black Dragon Knights' Castle by yuptype.
Ye Olde Dragon’s Inn by Bubis.
LEGO Construct & Command: Forest Outpost Siege by LEGOConstruct_and_Command.
WolfPack Hideout by @DanDelie.
The Mushroom House by JohnyKov.
Fantasy Dragon by Crossway_Studios.
Castle of White Lord Afol and the Black Knights by SleeplessNight.
The Castle Of The Black Falcons by thkindcrusader.
Minas Tirith by Dar-nat-phné.
Medieval Homestead by MegaPeskyPineapple.
Smaug by Brick-A-Brac.
Creator Windmill 3 x 1 by FranzPlus.
Asterix the Gaul by Ganpat the Celt.
Bone Wing by HerboRyanSeth_6561.
Royal Residence by SomethingOfAScientistMyse.
Winter Castle by Lukas_84.