The /r/place Atlas

Betrayal by r/dwarffortress

Some r/dwarffortress users and the r/minecraft group tried to divide the conquered r/indonesia space but the head dwarf threw a tantrum and the alliance ended

Warframe

They were called Tenno, warriors of blade and gun.
Warframe is a free-to-play third person shooter developed by Digital Extremes.

Northern Mexican Territory

The territory controlled by r/mexico began with a flag in the top right of this area and grew to create a sign reading 'Viva Mexico Cabrones!' to the left. Further expansion of this area was done by extending the flag downwards and claiming the territory to the left to match, parts of which were already held by other factions. Some, such as a Spanish Flag, were overwritten, and some were incorporated into the design, such as a Duck from r/duckgame and a pixelart Yoshi.
Tension between r/ukplace and r/mexico grew when a cactus was built which began extending up into the dress of r/ukplace's depiction of Queen Elizabeth II, but negotiations brought about a peaceful resolution and a non-aggression pact between the two powers.
In the final hours of Place, a Void Core was created in the left hand side of this territory and quickly expanded to cover the flag and destroy the pixelart, but was beaten back by a combined effort of r/mexico and several surrounding factions.
The flag was quickly rebuilt, but the empty space to the left became contested territory as r/ukplace began construction of Big Ben in the area, to which r/Mexico responded by attempting to expand their flag over it - a project which was only partially completed as Place came to an end.

Smiling Ancap Meme

Ancap (Anarcho-Capitalism) memes are a meme depicting a smiling face wearing sunglasses and giving a thumbs up while poking fun at anacho-capitalism.

Apocalypse Rising

The logo of Apocalypse Rising and the shortened form of its name, next to the logo of the developer's, Dualpoint Interactive. Apocalypse Rising is a popular game inspired by DayZ hosted on the ROBLOX website, a virtual world where players can make games and play user-made games. Apocalypse Rising is one of the most popular games, garnering over a hundred million visits.

Gilbert Baker Memorial

A memorial to Gilbert Baker who died aged 65, March 31st 2017
He was most known as a gay rights activist and the creator of the rainbow "gay pride" flag.

Stranger Things

Logo/Title card of the 2016 Netflix original series, "Stranger Things"

Yogscast's Honeydew

The Yogscast is a media production company based in Bristol who produce gaming related video content focused around their main YouTube channel, "YOGSCAST Lewis & Simon".

Vineshroom

The logo of the streamer group "Vinesauce", resembling a green 1-up mushroom with a smile and a huge V on the tip, also dubbed a Vineshroom.
Originally placed on the french flag, but was relocated after having been erased amongst other pixel arts.

Beer

Part of the r/denmark corner. Danes like their beer.

SHISHAMO

The logo for Shishamo, a Japanese band formed in 2010.

German Carrot

Originally a present from Germany's southern neighbours, /r/farmcarrots, to commemorate peace between the two factions. Unfortunately, /r/farmcarrots got attacked by Kekistan and burned down almost entirely. Germany granted this carrot asylum and vowed to liberate the carrot lands. Although making good progress in fighting back the invaders, r/place ended just as the battle over Kekistan reached its peak, and the ultimate fate of the farmcarrots remains uncertain.

Dallas Stars

The Dallas TX hockey team.

Titanfall

Titanfall is a 2014 sci-fi first-person shooter developed by Respawn Entertainment.

SpaceX

SpaceX is an American aerospace manufacturer founded in 2002 by Elon Musk

Temmie (Irish)

A character from the game Undertale (2015). The Irish flag, and the green, white, and orange clothes were added when the expansion of Ireland's flag caused them to hit Temmie, which Ireland decided to incorporate into their flag.

Surprised Patrick

Patrick Star from SpongeBob SquarePants, this particular image of him is from The SpongeBob Squarepants Movie and is photoshopped into images with humourous contexts.

Kirby

Sprite of Kirby from the Kirby series for many Nintendo systems.

The Drifter

The MC from the game Hyper Light Drifter

Romanian Heart 4

One of the three hearts with the Romanian flag.

Madeon - Adventure

Madeon is a French DJ and electronic music producer. This is the symbol from his first album, Adventure

Flag of Esperanto

Esperanto, created 26 July 1887, is an international auxiliary language and the most widely-spoken constructed language in the world.

Kyoko

Sakura Kyoko is a magical girl from the Madoka Magica franchise, known for a superficially violent me-first attitude that is ultimately belied by her ultimate self-sacrifice to save the blue-haired Sayaka.
Kyoko's magical girl activities drove her father to commit a murder-suicide that killed all her family.

RWBY Logo

RWBY is an anime-inspired webseries by Monty Oum

Karl Marx

Pixel art representing Karl Marx, well known for developing economic and philosophical theories collectively known as Marxism and writing the Communist Manifesto

Rat Hub

A tribute to a small group of friends on Discord.

Flag of Latvia

UBC Crest

University of British Columbia. The Premier university in Western Canada and one of the top 40 universities in the world

TFLS

the label for /r/thefarleftside

David Bowie

British singer, songwriter, and actor David Bowie (1947-2016), with the iconic "Aladdin Sane" lightning-bolt across his face.

Madoka Magica

Puella Magi Madoka Magica is a magical girl anime released on-air in 2011

Viking Longship

An iconic Viking Longship made to watch the shores of the United Kingdom. Each shield represents the flag of a major Nordic/Scandinavian nation.

Rust

Rust is a general purpose programming language, designed to be a "safe, concurrent, practical language", supporting functional and imperative-procedural paradigms.

Coldplay: A Rush of Blood to the Head

2002 album of the British rock band Coldplay

Python

Python is a widely used high-level programming language for general-purpose programming, created by Guido van Rossum and first released in 1991.

Small Israeli Flag

Small Israeli Flag made by /r/Israel; vandalized and later abandoned for the larger one above, it was nonetheless not completely erased.

Chelsea FC

Chelsea is a British football club from London.

Detroit Red Wings

NHL Hockey team. Their "Winged Wheel" logo was slowly eroded by its neighbors.

Ghost Bird

Ghost Bird is the main character of his self-titled, work-in-progress game by torcado. Ghost Bird was previously placed above where Marianne is now, until a french group painted over him to build her. Ghost Bird was moved to this spot under Lord Helix after coordinating with the /r/ainbowroad group.

World War Commemoration

The dates of the two world wars and a poppy are drawn here to remember the two world wars.

Flag of Ireland

Ireland's flag.

Bread

A loaf of Bread constructed by a few users of Anarchist subreddits to represent the ideas of Pyotr Kropotkin, Russian anarchist and author of the influential anarchist book, 'The Conquest of Bread'. Since this was a relatively late addition to the place, and is not a particularly obviously Leftist symbol, the Bread saw little vandalism and required no bots to maintain.

furry_irl

A spinoff of the popular me_irl subreddit, but for furries and /r/furry users. Humor is mainly based around knots, bad dragon, sea salt, being gay, yiffing, and the seemingly endless debate between "fans" of Kass and Sidon from the Zelda universe.

Marisa Kirisame

An ordinary human magician residing in the land of Gensokyo. Has a penchant for collecting items and for using overly-flashy magic.

Re: Zero

The characters Subaru, Rem, Ram and Emilia from the anime Re: Zero, along with the series name.

Flag of St. David

The flag of the patron saint of Wales

(Covered) Skeletor's blunt

Once upon a time, Skeletor had a joint drawn by the /r/trees sub-reddit. Said blunt was slowly ereased to simulate Skeletor smoking the joint. You can see a sped up gif of it on this reddit post on /r/Place: Link

South Korea heart

Meat Boy

The Main character from the platformer video game Super Meat Boy. Designed by Edmund McMillan and released in 2010.

Reimu Hakurei

Iconic protagonist of the Touhou franchise. Serving as the Shrine Maiden of the Hakurei Shrine, she is often solicited to resolve youkai-related problems in the land of Gensokyo.