The /r/place Atlas

Flag of St. David

The flag of the patron saint of Wales

Latvia and Lithuania

The words "Latvia" and "Lithuania" in their respective lanuages with hearts next to them, each with their own flag. This represents the solid and almost brotherlike relations between the two countries.

Yugoslav Heart

A placeheart dedicated to the former country of Yugoslavia

Finland 100 years independent

This year, Finland celebrates its 100th year of independence.

Maltese Flag Heart

2147m Cash Stack

This represents the maximum amount of cash you are able to hold at one time in Runescape or Oldschool Runescape.
The exact number is 2,174,483,674, but gets shortened by the M, meaning million.
This is due to the maximum 32bit integer in java being this number.

Team Fortress 2: nope.avi

A pixel art version of a Team Fortress 2 meme. It originated from a user-created youtube clip that used the TF2 player model and voice command.

Austria

Flag of Austria with eagle and the words "Austria" and "Oida". "Oida" is a dialectic writing of the german word "Alter" used to colloquially adress others, similar to the english expression "Dude!"

Glyndŵr's Banner

15th century Welsh Royal Standard of Owain Glyndŵr.

Century Club

A private subreddit for users who have gained over 100 thousand karma

Anarchist Flags

Various anarchist tendencies (Top to bottom: queer anarchism, individualist anarchism, and anarcho-transhumanism)

Baltazar

Professor Balthazar is a Croatian animated television series for children about an old inventor that was produced between 1967 and 1978. It was created by animator Zlatko Grgić.

Ferris the Crab

Also called the Rustacean. The unofficial mascot of the Rust programming language

SNSD

SNSD (소녀시대), also known as Girls' Generation, is a South Korean girl group that debuted 2007 under S.M. Entertainment. The group is composed of eight members: Taeyeon, Sunny, Tiffany, Hyoyeon, Yuri, Sooyoung, Yoona, and Seohyun. Originally a nine-member group (with Jessica, who later departed from the group in September 2014).

Flag of Switzerland

#1 in moon landings

This area above the US flag used to say "#1 in moon landings!!!!!!!!"

Pandemic Horde

One of major EVE ONLINE alliances which consists from 10 000 members.

TOPS

A school program called TOPS, written in by 3-4 people, led by /u/Thunderbird2678.

Norwegian heart

Created by r/norge

Green Lattice Diamond

A custom design created for the green lattice

Seventeen

SEVENTEEN, or SVT, is a South Korean boy idol group that debuted in 2015 with Pledis Entertainment. Their members are divided into three sub-units. Their official fan club is known as Carat, with a jewel icon. It is represented here in their fandom colors.

Smiley Face

A universal symbol of happiness rendered on a small scale for bite sized fun.

One-Punch Man

One-Punch Man is originally a Japanese superhero parody webcomic which began publication in early 2009.
It was mostly unknow to the western public until it got anime adaptation in spring 2015.
Depicted is the protagonist (One Punch Man)

Heart-shaped Viet Nam flag

Main contributors: ClarenceLe, trapizi, Alkaline_B3n0

CryptoFR (CFR)

Last piece saved from the CryptoFR logo (eaten by Bitcoin flag in the last hours).
CryptoFR is the biggest french speaking community on cryptocurrencies and blockchains.

Flag of the Netherlands

Link

Link is the protagonist character of The Legend of Zelda video game series. Other Zelda-related items exist on the drawing.

AOA

Ace of Angels is a South Korean girl idol group that debuted in 2012 with FNC Entertainment. Their official fan club is known as ELVIS.

Chile

A heart with the pattern of the chilean flag

Rainbow Paw

Symbol used by users in r/furry to show their furriness and homosexuality.

Flag of Russia

Heart-shaped flag of Russia.

Flag of Iran

Moondye7 Logo

The Logo of Moondye7, a german Youtuber and Twitch Streamer.

Brazilian avocado

He's wearing "deal with it" glasses

Vaporeon (Shiny Pokemon)

Vaporeon is a Water-type Pokemon that evolves from Eevee, just above it in the picture. Vaporeon is normally blue, but the picture's purple depiction indicates a shiny Pokemon.

Homura Did Nothing Wrong

A popular Madoka Magica meme and the start of Madoka Magica /r/place art.

日本 (nihon) Japan

Japanese name for "Japan"

Indonesian/Singaporean/Dutch Heart

Originaly an Indonesian Heart, but sometimes it becomes Singaporean and sometimes Dutch. It's been a continous war between those three. At the end it's an Indonesian flag with unfinished Singaporean moon/stars (top left) and unfinished Dutch blue stripe.

Pusheen

A small memorial to the GreyBlob, which was destroyed by multiple invading forces.

Newcastle flag

The flag for Newcastle, England

Faction Logo

A marking given to upgraded items that can be procured from various factions/races in Eve Online.

Hidden League Gaming

Major League Gaming logo parody for a flavor of trolls that draw out the length of online multiplayer games by hiding from the members of the other team instead of fighting

Green Carrot

One of the few surviving carrots from /r/farmcarrots. Its colors have been swapped making it a green carrot with orange leaves. You can find what it originally looked like here:
http://imgur.com/xUWgFoJ

LOL M2K

Mew2King (M2K) is one of the top competitive Super Smash Bros. players. LOL M2K is a meme used for funny moments involving Mew2King.

BOPP Dwarf

The creation of a military dwarf (in Dwarf Fortress, military dwarves are represented by a filled in dwarf icon) using the BOPP may have been planned as early as the 1st of April, not as part of a treaty requirement but simply as a gesture of friendship and solidarity towards BOPP.
Unfortunately, a lack of clear communication early on in the /r/place efforts of the Dwarf Fortress community meant that the BOPP dwarf was not successfully built until the last day of /r/place. On the last day, enough of the Dwarf Fortress placing community was present in the Dwarf Fortress discord channel that effective coordination was possible, and those working against the pattern could be notified through reddit PMs. Ironically, some of the people initially working against the patterned dwarf were members of /r/placeportalpattern under the impression that some on their side were overstepping their bounds, as happened with the continuation of The Diamond beyond the standard border of the BOPP.

League Of Legends

League of Legends (abbreviated LoL) is a multiplayer online battle arena video game developed and published by Riot Games for Microsoft Windows and macOS. The game follows a freemium model and is supported by microtransactions, and was inspired by the Warcraft III: The Frozen Throne mod, Defense of the Ancients. League of Legends was generally well received at release, and has grown in popularity, with an active and expansive fanbase. By July 2012, League of Legends was the most played PC game in North America and Europe in terms of the number of hours played. As of January 2014, over 67 million people played League of Legends per month, 27 million per day, and over 7.5 million concurrently during peak hours.

Link

The protagonist of the Legend of Zelda games, wearing a Goron tunic, and a health bar.

Dragon Radar & Four-Star Ball

The iconic four-star ball from the Dragon Ball manga/anime franchise, and a Dragon Radar - a device used to locate the dragon balls.

Flag of Ireland

Flag of Ireland. Features several collaborations with other subreddits like r/Undertale, and their green clad "Temmie" at the bottom

Vermont

A small but significant state. 802 is the area code and a number of pride for Vermonters.