How the architecture communities compare
A few giants dominate — r/architecture, r/ImaginaryArchitecture and r/InteriorDesign together account for 91% of the combined membership. r/architecture and r/InteriorDesign are the two busiest, with roughly 30 and 33 new posts a day. Per member, the liveliest is r/amazing_architecture: 6.9 posts a day from 48.2K members — a smaller crowd, but an engaged one. Among the communities we track weekly, r/InteriorDesign grew fastest recently (+0.15%, +1.8K members since Oct 26). The oldest is r/architecture, founded in 2008, and every community here is more than five years old — this is a long-established corner of Reddit.
The 7 biggest architecture subreddits
- Ar/architecture ↗ 2,061,089 members · ~30 posts/day · +3K since Oct 26 · since 2008
A community for students, professionals, and lovers of architecture.
- Ir/ImaginaryArchitecture ↗ 1,233,153 members · ~0.7 posts/day · +453 since Oct 26 · since 2013
Paintings and drawings featuring architecturally interesting buildings and structures, real or imagined.
- Ir/InteriorDesign ↗ 1,152,370 members · ~33 posts/day · +1.8K since Oct 26 · since 2009
Interior Design is the art and science of understanding people's behavior to create functional spaces within a building. It is a multi-faceted profession in which creative and technical solutions are applied within a structure to…
- Lr/Lost_Architecture ↗ 253,144 members · ~7.6 posts/day · since 2017
r/Lost_Architecture, is a subreddit devoted to images and discussion of interesting buildings that no longer exist.
- Mr/ModernistArchitecture ↗ 65,973 members · ~2.1 posts/day · since 2019
A place to share and discuss modernist architecture and buildings.
- Lr/LandscapeArchitecture ↗ 52,537 members · since 2010
You can pretty much post anything here that pertains to Landscape Architecture. I am a landscape architect and i just enjoy reading about the field and anything that relates to it, urban planning, architecture, storm water manage…
- Ar/amazing_architecture ↗ 48,233 members · ~6.9 posts/day · since 2020
A leading platform for architecture projects and inspiration for budding architects, creatives and the global community. https://amazingarchitecture.com #amazingarchitecture
Choosing where to post
r/InteriorDesign moves fastest, with about 33 new posts a day, so posts there get replies quickly but also slide off the front page within hours.
Big subreddits give a post the widest audience, but they also bury it quickly; the mid-sized communities on this list are usually friendlier for questions and first posts. Always read the rules in the sidebar first — each community is run by its own volunteer moderators. Our guide to searching Reddit explains how to dig through any of these communities, and the subreddit info tool gives you the stats of one we don't list.
Frequently asked questions
Which architecture subreddit has the most members?
r/architecture is the largest, with 2,061,089 members, followed by r/ImaginaryArchitecture (1.2M) and r/InteriorDesign (1.2M).
Where are the most new architecture posts?
By new posts per day, r/InteriorDesign leads with about 33, ahead of r/architecture (30). Counts are averages over the last seven days.
How many architecture communities are on this list?
We list 7 active, safe-for-work architecture communities with at least 25,000 members each, 4.9M members in total (people can be in several). Reddit has many smaller ones too; our guide on searching Reddit shows how to find them.
What is the oldest architecture subreddit?
r/architecture, created on Feb 29, 2008.
Are these architecture subreddits safe for work?
Yes. Every community on this page is public and not marked 18+ by Reddit, and we filter out communities whose name or description points to adult content.
Data: Reddit's public subreddit search and the Arctic Shift archive (Nov 6, 2026), growth from SubMouse's weekly snapshots. Member counts of communities outside our Top 1000 come from the archive and can lag a little. Not affiliated with Reddit.