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Information aggregated automatically. Verify all dates, locations, and pricing on the official conference website before making arrangements.
data2day is an in-person conference in Cologne, Germany focused on AI, Data, Machine Learning. The event gathers AI and machine learning engineers for a day of talks, workshops, and peer networking in 2026. The programme covers LLMs, model deployment, MLOps, responsible AI, and practical AI integration in software products. The conference takes place in Cologne, Germany.
data2day 2026 takes place October 7–8, 2026 in Cologne, Germany.
data2day 2026 is an in-person event.
Travel questions? See Good to know in the travel guide below.
Cologne in early October is cool and changeable, sitting between the end of summer events and the start of the carnival build-up in November. The city's data and analytics community meets in the districts around the Rhine, with the cathedral visible from almost everywhere as a reliable navigation aid. Cologne is also the most walkable of the big Rhineland cities, and its brewery-tavern culture makes conference evenings straightforward to organise.
Cologne Bonn Airport (CGN) connects to the Hauptbahnhof by S-Bahn lines S13 and S19 in about fifteen minutes. Düsseldorf (DUS) is a larger alternative, roughly forty minutes away by regional train. Frankfurt Airport links to Cologne by ICE in under an hour. The city's tram and U-Bahn network runs from the Hauptbahnhof, though the centre itself is easily covered on foot.
Skip the taxi queue — pre-book a fixed-price airport transfer with Kiwitaxi. Exploring beyond the city? compare rental cars on Auto Europe.
Coverage across Cologne is strong on all German networks. An eSIM avoids the identity verification German prepaid SIMs require and works from arrival. Set up an eSIM with Airalo before you board and you're online the moment you land.
Cologne Cathedral. The Gothic cathedral stands directly beside the main station and is free to enter. The south tower climb is 533 steps and takes about forty-five minutes round trip, giving a view over the Rhine and the Hohenzollern Bridge. Going early avoids both the tower queue and the tour groups inside.
Museum Ludwig. Modern and contemporary art next to the cathedral, with major Pop Art and Picasso holdings and a strong photography collection. Two hours is a reasonable visit. Its position between the station and the river makes it the easiest cultural stop to fit around a conference schedule. Tickets on Tiqets →
Rhine promenade and the Old Town. The riverside walk from the Hohenzollern Bridge south past the old town's coloured houses takes about forty minutes. Traditional Kölsch breweries sit just inland, serving in small glasses replaced until you signal otherwise. Evening is the time to go, when the bridge lights reflect off the water.
Chocolate Museum. On a spit of land in the Rhine south of the old town, covering cocoa cultivation and industrial chocolate production with a working production line. Ninety minutes covers it. The riverside walk to reach it is pleasant in itself, and it makes a good option on a wet afternoon. Tickets on Tiqets →
How do I reach the city from Cologne Bonn Airport?
S-Bahn lines S13 and S19 run from the terminal to the Hauptbahnhof in about fifteen minutes.
Is Cologne walkable?
Yes. The cathedral, old town, museums, and main station sit within a compact area, with trams covering longer distances.
What is the weather like in early October?
Cool and often wet, around twelve to sixteen degrees Celsius. Rain is common along the Rhine, so bring a waterproof.
Travel notes written for data2day attendees. Links marked above are affiliate links — we may earn a commission at no cost to you. Verify schedules and opening hours on official websites before you travel.
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