frontpage.
newsnewestaskshowjobs

Made with ♥ by @iamnishanth

Open Source @Github

fp.

Open in hackernews

Show HN: CityFlashback – Explore your city through historical photos

https://www.cityflashback.com/
1•iamsmaso•18h ago
Hi HN

Over the last few weeks I started a small side project — partly to learn frontend development (I usually work as a backend developer in my 9-5), and partly because every time I walk around I keep wondering: “what did this place look like in the past?”

Until now I just searched for "<place> historic photos", but they rarely come with coordinates or a way to compare them with how the place looks today. So I built something like a “Wikipedia/GeoGuessr for historical images” — ideally community-maintained over time.

Right now, it’s very barebones: - an interactive map to browse the uploaded images - a simple side-by-side image comparator

It’s still an MVP with a small dataset (mainly Turin, Italy, since that’s where I live), but I plan to expand it as I have more time.

I’d love your feedback: - Does the concept sound interesting? - What features would make it more useful or fun? - Do you know of any open datasets of historical photos I could integrate?

Happy to answer any questions, and very open to suggestions

Comments

just_human•17h ago
This is a cool idea! I think you need to find a way to seed more photos (are there any public archives by country/state you could use?), but I could see this being useful when traveling as a way to understand the history of a place.

Somewhat related, but made me remember Color Labs (https://en.wikipedia.org/wiki/Color_Labs) which tried to build a social network where you could see photos taken by other people in your location.

iamsmaso•23m ago
Thank you!

Right now I'm looking for more photos, but I often find images where the historical and recent views are combined in the same frame. So I need to adjust the upload flow to make it easier to crop them into two separate images.

Realistic attack vectors against modern ecommerce platforms that defenders miss?

1•iksmel•1m ago•0 comments

Google admits the open web is in 'rapid decline'

https://www.theverge.com/news/773928/google-open-web-rapid-decline
2•pseudolus•10m ago•0 comments

How to Become a Pure Mathematician (Or Statistician)

http://hbpms.blogspot.com/
1•ipnon•11m ago•0 comments

A Billionaire Owner Brought Turmoil and Trouble to Sotheby's

https://www.newyorker.com/magazine/2025/09/01/how-a-billionaire-owner-brought-turmoil-and-trouble...
1•FinnLobsien•14m ago•0 comments

Running a Root DNS Server on FreeBSD from Alpha to Now by Daniel Mahoney

https://toobnix.org/w/hL5BvuZsy5B3PSeW4YzeNa
1•rodrigo975•19m ago•0 comments

Show HN: PDFGate

https://pdfgate.com/
3•byteforge•27m ago•2 comments

ASML and Mistral agree €1.3B blockbuster European AI deal

https://www.ft.com/content/98e78f6b-0ebf-4546-b25f-bf7621e26c8b
1•jamesblonde•29m ago•0 comments

Mistral AI raises €1.7B to accelerate technological progress with AI

https://mistral.ai/news/mistral-ai-raises-1-7-b-to-accelerate-technological-progress-with-ai
2•kgwgk•31m ago•0 comments

Meta hid harms to children from VR products, whistleblowers allege

https://www.theguardian.com/technology/2025/sep/08/meta-virtual-reality-whistleblowers
2•beardyw•32m ago•0 comments

19 Dead in Kathmandu Social Media ban protests

https://kathmandupost.com/national/2025/09/08/nepal-s-gen-z-uprising-explained
1•schmudde•34m ago•0 comments

Jobseekers from Africa being tricked into slavery in Asia's cyberscam compounds

https://www.theguardian.com/global-development/2025/sep/09/cyberslavery-kenya-uganda-ethiopia-sou...
2•beardyw•34m ago•0 comments

David Sacks' rules for success in Trump's Washington

https://www.semafor.com/article/09/08/2025/david-sacks-rules-for-success-in-trumps-washington
1•aspenmayer•36m ago•1 comments

New parametric CAD BREP kernel attempt

https://github.com/mmiscool/BREP
1•mmiscool•36m ago•0 comments

Lea Ypi: How to think about surveillance

https://www.ft.com/content/9e7372b7-002e-41db-823c-7a70ab8d888d
1•bcye•37m ago•0 comments

DeepWiki of Twitter's Recommendation Algorithm

https://deepwiki.com/twitter/the-algorithm
1•spdling2•40m ago•0 comments

Launching QuickDID – Fast, Open Handle Resolution for the AT Protocol

https://ngerakines.leaflet.pub/3lyea5xnhhc2w
1•g0xA52A2A•42m ago•0 comments

Driftsort: An efficient, generic and robust stable sort implementation

https://github.com/Voultapher/sort-research-rs/blob/main/writeup/driftsort_introduction/text.md
1•g0xA52A2A•43m ago•0 comments

Ask HN: Let's find out who is from which country?

1•Forgret•53m ago•2 comments

The Center for Human-Compatible Artificial Intelligence Is Hiring

https://humancompatible.ai/jobs#chai-internship
1•chai-admin•54m ago•1 comments

Norway's Labour party wins election after seeing off populist surge

https://www.theguardian.com/world/2025/sep/08/norways-labour-party-holds-narrow-lead-in-early-ele...
3•mtlmtlmtlmtl•57m ago•0 comments

Show HN: AuctionHubIndia – Discover Bank Auction Properties Across India

https://www.auctionhubindia.com/
1•raooll•58m ago•0 comments

Tanstack: Headless, type-safe and powerful utilities for Web Applications

https://tanstack.com/
1•chabad360•59m ago•0 comments

Compiling a Functional Language to LLVM

https://danieljharvey.github.io/posts/2023-02-08-llvm-compiler-part-1.html
3•Bogdanp•1h ago•0 comments

Free Video Blur Tool – WuMask

https://wumask.com/
1•EtudusMax•1h ago•1 comments

ASML, Mistral AI enter strategic partnership

https://www.asml.com/en/news/press-releases/2025/asml-mistral-ai-enter-strategic-partnership
3•TechTechTech•1h ago•0 comments

The Army Behind the Army (1919)

https://gutenberg.org/cache/epub/76843/pg76843-images.html
2•petethomas•1h ago•0 comments

Google Launches Preferred News Source

https://blog.google/products/search/preferred-sources/
1•firefoxd•1h ago•0 comments

Show HN: AI Toolbox – a free collection of tiny web utilities

https://www.ellipselabs.tech/
1•Prit44421•1h ago•1 comments

Rethinking Analytical Processing in the GPU Era

https://arxiv.org/abs/2508.04701
3•matt_d•1h ago•0 comments

The next chapter for Atlassian and our customers

https://www.atlassian.com/blog/announcements/atlassian-ascend
1•eastbound•1h ago•1 comments