IBD+ 2025 - International Mensa Gathering

The IBD+ 2025* will take place in Germany in Düsseldorf from October 23^rd to 26^th, 2025.

We were asked to detail a bit more what we really plan – please take a look at The “+” in IBD+ explained.

This event is for Mensans from all over the world, their beloved ones and those interested in Mensa (even not Mensa members).

Four days of Mensa party – 150 different events in the making with nearly 10.000 slots – sleeping is optional :‐)

The booking the big IBD+ 2025 os open since June 1^st 2025 at 19:46 o'clock.

Booking pages IBD+ 2025 – this is the main one with all the events                IVN and IVN+ – Volunteering

You will need to have an account on our booking system, so please do register if not done yet.

From October 17^th to 26^th an European Mensa Juniors Camp (EMJC) is planned in Duisburg which is about 30 km away from Düsseldorf.

Some further links that might be of interest:

• If you have problems to login please consult the page Please consult this page: Registration or this one: Login Issues.
• The Accommodation page including a link to the accommodation booking page.
• On How to get there you can find special Lufthansa discount for IBD+.
• We're on Facebook, Whatsapp and Signal – see IBD+ Newsletter & Channels.
• And we have two flyers on Downloads you may look at, print and distribute.

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Here are events we prepared for you. This list is extensive but might change a bit since there are still a few events in the making (we're wainting for the final "ok" before we may present them on here). So expect the event lists below to grow in the next weeks.

By clicking on the small triangles at the left you can unfold the list of events by location, category, or date.... or click on "Expand" in a title to expand all for that part; "Collapse" reverses that obviously.

Time Tables

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The main venue is the Maritim Hotel Düsseldorf, Maritim-Platz 1, 40474 Düsseldorf, Google Maps.
The hotel is located within walking distance of Düsseldorf international airport (IATA code DUS) and just a quarter of an hour from Düsseldorf main railway station using local trains.

Visitors not attending the IBD Meeting 2025 itself will be offered the odd** event like presentations, sightseeing, company tours, cultural events, games, talks, tastings, cozy hours, get-togethers and much more (a bit like a German Mensa annual gathering).

If you have wishes, recommendations for things you want to see, visit, taste, drink, or hear as part of the IBD+, or want to offer your support, or just have a question please drop us an email at ibd2025@mensa.de.

+ The plus indicates that we will offer quite a few events for visitors.
* The International Board of Directors meeting (IBD) is the general meeting of the worldwide leadership of Mensa.
** Well, quite a few events as a matter of fact

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Here is some information we have compiled for you:

Imortant things

The “+” in IBD+ explained  •  What will IBD+ really offer

Organisational things

Last Minute Information  •  General Information  •  How to get there  •  Upon arrival  •  Accommodation
IBD+ Newsletter & Channels  •  Downloads  •  Registration  •  Weather/Packing Recommendations

Transport

During IBD+  •  Trains  •  Local  •  Planes  •  Cars

More about Germany

Fun (and interesting) Facts about Germany and Düsseldorf  •  Important to know  •  Currency & Payment
Electrical Devices  •  Shopping in Germany  •  WiFi & Mobile phone/data  •  Emergencies/Medical Support