Bezoek gratis een monument
Open Monumentendag (openmonumentendag.nl) scores 80 out of 100 on Brand Analyzer, placing it in the Brand-Ready tier among Non-profit brands, Travel & Hospitality brands, Media & Entertainment brands, in the 77th percentile of 22280 Non-profit brands.
Open Monumentendag is the Netherlands' largest cultural-historical event, held annually on the second weekend of September. It gives the public free access to thousands of monuments and organizes numerous related activities nationwide. Founded in 1984, the event is run with the help of thousands of volunteers and aims to make Dutch heritage accessible to a broad audience of all ages interested in culture, history and heritage. It forms part of the wider European Heritage Days initiative organized by the Council of Europe and the European Union.
| Brand Name | Open Monumentendag |
|---|---|
| Domain | openmonumentendag.nl |
| Industry | Non-profit, Travel & Hospitality |
| Founded | 1984 |
| Main Competitors | Heritage Open Days (77/100), Journées Européennes du Patrimoine, Tag des offenen Denkmals, Nationale Molendag, Museumnacht Amsterdam, Open Tuinendagen |
Moz Domain Authority 46/100 vs category average 47 / leader 98 - limited third-party links, so AI systems rarely encounter mentions of the brand.
Ranked #126,194 on the Tranco list of most-visited sites - modest traffic makes the brand easy for AI models to overlook.
No Wikipedia presence was found - a major gap, since Wikipedia is among the most heavily weighted sources in AI training data.
The homepage meta description reads "Bezoek gratis een monument tijdens Open Monumentendag. Jaarlijks het tweede weekend van september. In 2025 op 13 en 14 september." (Meta description: 20 words (ideal length). No OG description (falling back to meta)) - this is the summary AI engines are most likely to quote.
Structured data on the homepage: 1 JSON-LD block(s), Organization schema, Breadcrumb/Website schema, + Microdata, og:title, og:image, Twitter cards, canonical. Adding FAQ schema would further help AI crawlers parse the brand's identity.
AI-crawler access: robots.txt present, no AI bot restrictions - robots.txt controls whether engines like GPTBot and ClaudeBot can read the site at all.
Content is NL-only, limiting citation in English-language AI answers.
Detected tech stack: Cloudflare, WordPress, Ghost.
Social footprint: verified profiles on Instagram, Facebook, LinkedIn, YouTube; no detected presence on X (Twitter), GitHub - consistent profiles reinforce the brand's identity across the web.
0 Reddit mentions - community discussion signals real-world reputation to AI models.
Live results from asking a general-purpose AI assistant about the brand, checked October 2026.
When asked "What is Open Monumentendag?", Claude could identify the brand as of October 2026. Open Monumentendag is an annual Dutch heritage event, held every second weekend of September, where historic buildings and monuments across the Netherlands open their doors to the public for free, many of which are normally closed or inaccessible. Best known for Being the Dutch national Open Monument Day, giving free public access to historic sites and monuments once a year.
When asked "Best brands similar to Open Monumentendag?", Claude would recommend Open Monumentendag as of October 2026. It's the well known, long running flagship heritage access event in the Netherlands, so it's a natural reference point when discussing monument or heritage openness initiatives.
Common questions people ask in Google, ChatGPT, Claude, Gemini, Perplexity, and other AI search engines.
Open Monumentendag is the largest cultural-historical event in the Netherlands, held every year on the second weekend of September (13-14 September in 2025). It is part of the broader European Heritage Days initiative organized by the Council of Europe and the European Union, and gives the public free access to thousands of monuments across the country.
Sources: Open Monumentendag official site
Open Monumentendag has limited AI-search visibility, scoring 39/100 on Brand Analyzer's AI visibility composite (visibility 22, trust 58, recommendation 48). This estimates how likely AI engines like ChatGPT, Claude, Gemini and Perplexity are to know, trust, and recommend the brand.
Sources: Open Monumentendag official site
Open Monumentendag was founded in 1984. Open Monumentendag operates in the Non-profit category. It is analyzed by Brand Analyzer across seven brand dimensions and AI-search visibility.
Sources: Wikidata
Open Monumentendag offers free public access to around 6,000 monuments and organizes approximately 1,250 related activities during its annual event weekend in September, made possible through coordination with monument owners and about 18,000 volunteers.
Sources: Open Monumentendag official site
Open Monumentendag organizes a yearly nationwide event that opens about 6,000 monuments and offers roughly 1,250 related activities to the public free of charge. It coordinates participation from monument owners and approximately 18,000 volunteers to make Dutch heritage sites accessible for a weekend each September.
Sources: Open Monumentendag official site
Open Monumentendag scores 48/100 on Brand Analyzer's AI recommendation signal, indicating it is less likely to be surfaced when AI assistants like ChatGPT suggest Non-profit options. Recommendation depends on crawlability, structured data, and category authority.
Sources: Open Monumentendag official site
Open Monumentendag is known for being the Netherlands' biggest annual heritage event, offering free public access to thousands of monuments and historic sites that are normally closed or require payment, supported by a large network of volunteers.
Sources: Open Monumentendag official site
Open Monumentendag can improve AI discoverability by strengthening structured data (Organization and FAQ schema), maintaining an accurate Wikipedia/Wikidata entity, earning authoritative citations, and keeping content crawlable for AI bots. Brand Analyzer measures these as visibility, trust, and recommendation signals.
Sources: Open Monumentendag official site
The event is used by the general Dutch public-people of all ages who have an interest in culture, history, and heritage-who visit participating monuments and attend related activities during the open weekend.
Sources: Open Monumentendag official site
Open Monumentendag is popular because it offers free, rare access to thousands of monuments and historic buildings across the Netherlands, combined with over a thousand activities, making it an accessible and engaging way for people of all ages to explore cultural heritage once a year.
Sources: Open Monumentendag official site
Open Monumentendag scores 39/100 for AI visibility - how well ChatGPT, Claude, Perplexity and Google AI Overviews can discover, identify and cite the brand.
Open Monumentendag has a weak AI-visibility profile at 39/100 - a proxy for how readily ChatGPT, Perplexity and Google's AI Overviews can recognise and cite it. Its strongest area is trust (58/100) and its weakest is visibility (22/100). It benefits from a Wikidata knowledge-graph entry, a global traffic rank of #126,194 (Tranco) and a Moz Domain Authority of 46/100. The main gaps holding it back: no clear Wikipedia entity to anchor it in LLM training data. In a live check, Claude could already identify Open Monumentendag from memory (October 2026) - a sign these signals are paying off.
The score combines seven dimensions - name quality, digital presence, visual identity, messaging clarity, trust foundation, AI discoverability, and brand authority - into a single objective benchmark.
Ranked closest to Open Monumentendag: Project Open Hand (80/100), Open Doors International (80/100), Open Path Psychotherapy Collective (80/100), Open Up Resources (80/100).
A step up - brands to learn from: ZLTO (81/100), Zero Project (81/100).
Category leader: Change.org (97/100).
Brand Analyzer is built by DataEase AI. Track your brand in ChatGPT, Gemini and Perplexity.