Who helps us, and with what.
Via Nostalgia (operator details in the Impressum) is run by one person, with a few companies doing the heavy lifting. This is every one of them that handles data about you, what they get, and where they are.
Companies that process data for us
They work on our behalf, under data processing terms that bind them to our instructions (Art. 28 GDPR). Wikimedia and OpenStreetMap only receive what you choose to publish there, and they publish it under their own rules.
| Who | For what | What they get | Where |
|---|---|---|---|
| Cloudflare, Inc. | Hosting every site, databases (D1), file storage (R2), bot checks (Turnstile), AI models for organisations' Atlas tool (Workers AI), page-view counts for Events and Revival | Everything we store; IP address and browser details of every visit | USA company. Main databases in Cloudflare's European data centres; Adventures photos in storage not pinned to the EU; visits served from the nearest data centre. Data Privacy Framework and SCCs. |
| Brevo (Sendinblue SAS) | Sending email for vianostalgia.com, Adventures, Events and Revival: sign-in links, notices, invitations, reminders, digests, replies, confirmations | Email address, credit name, the email itself | France, EU |
| OpenRouter, Inc. | "Ask a guide" in Adventures: passes your question to an AI model | Your question, earlier answers in that chat, the place's public facts. No name, account or location. | USA. SCCs. |
| The AI model provider OpenRouter picks | Writing the guide's answer. We ask for free models, for example Google's Gemma or NVIDIA's Nemotron, through whichever provider hosts them. | As above | Varies; may be outside the EU. Free models may keep what they are sent. |
| Photon, by komoot GmbH | Address and street search in Adventures and in the connector for AI assistants | Search words and the map area, rounded to about a kilometre. Sent by our server, not your browser. | Germany, EU |
| Nominatim, OpenStreetMap Foundation | Finding what is at a spot when you propose a place | A map point. Sent by our server. | UK (adequacy decision) |
| Wikipedia and Wikidata, Wikimedia Foundation | Facts about a place you propose | A place name or map point. Sent by our server. | USA |
| Wikimedia Commons, Wikimedia Foundation | Publishing photos you choose to share, under CC BY-SA 4.0 | The photo, your credit name, the place, date and caption | USA. Public, under Wikimedia's own privacy policy. |
| OpenStreetMap Foundation | Public notes about approved corrections to OpenStreetMap places | What is wrong and the correction. Never your name or account. | UK. Public. |
Sites your browser contacts directly
To show maps, photos and Studio's tools, your browser loads them straight from these services. They see your IP address and what was loaded, as with any website, and nothing else from us: not your account, your stamps or your position.
| Who | For what | What they see | Where |
|---|---|---|---|
| OpenFreeMap | Map tiles for the Adventures map (some areas come from our own tile server on Cloudflare) | IP address, and which map area is on screen | EU and worldwide servers |
| Wikimedia (upload.wikimedia.org, thumb.wikimedia.org) | Place photos in Adventures and in the connector's cards | IP address, and which photo | USA, with servers worldwide |
| Hugging Face | Studio's AI models for captions, translation and voices, downloaded once | IP address, and which model | USA |
| jsDelivr | Code that runs Studio's AI tools, downloaded once | IP address | Worldwide network |
| Google Cloud Storage | Studio's reframing model, downloaded once | IP address | USA, worldwide |
| Cloudflare Turnstile | Checking for bots when you sign in to Events and Revival, and on their reply and invitation pages | IP address, browser signals | USA, worldwide |
Who we don't use
No advertising networks, no analytics companies, no social media trackers, and no data brokers. We sell nothing to anyone. Our code is kept on GitHub, which holds no personal data from our services.
Data outside the EU and your rights: see our privacy notice.
Draft. Last updated 29 October 2026.