Traveling Germany with AI: What Happened When I Used AI on a Real Trip

Before my trip to Germany, I thought AI would mostly help with planning.

Instead, it became useful in ways I hadn't expected—before the trip and while I was actually there.

I used Google Docs and Sheets to keep five travelers organized, built a travel expense app for our group, and turned to AI when I couldn't understand products, communicate easily, or figure out what to do when our train journey went wrong.

By the end of the trip, I had learned something simple:

The most useful technology wasn't always the one I planned to use. It was the one that helped with the problem in front of me.

📄 Before the trip: keeping five travelers on the same page

Traveling alone is one thing. Organizing a 10-day trip for five people is another.

Flights, accommodation, destinations, expenses—there was a lot of information that everyone needed to see.

Google Docs became our shared travel notebook, while Google Sheets helped us keep track of the budget and expenses.

🔗 I used Google Docs and Sheets to keep five travelers organized during our 10-day trip in Germany.

It wasn't sophisticated technology, but it solved an important problem: everyone could work from the same information.

⚽ AI helped me understand an unexpected moment in Frankfurt

Not every use of AI began with a problem.

While walking along the Main River in Frankfurt, I came across a large outdoor screen and a crowd watching a football match.

I hadn't planned for it. I simply wanted to know what was happening.

I used AI to help identify the scene and understand the event while continuing to explore the city.

🔗 An unexpected football crowd in Frankfurt became another small experiment in using AI to understand what was happening around me.

This was different from using AI to solve a travel problem.

Sometimes AI was simply a way to become more curious about a place.

💰 I also built something our group needed

Money created another challenge.

With five travelers, expenses weren't always divided equally, and receipts and currency conversion could quickly become complicated.

So I experimented with building something specifically for our trip: a travel expense web app.

It could scan receipts, convert euros to Korean won, and help divide expenses among different travelers.

🔗 I built a travel expense app with AI and actually used it during our Germany trip.

That experience showed me a different side of AI.

Sometimes I didn't need to find the perfect existing tool.

I could try building the tool I needed.

🇩🇪 Then Germany started giving me problems I hadn't planned for

Once we were traveling, the questions became much more immediate.

At a German supermarket, I wasn't sure which rice to buy for the kind of meal we wanted to cook.

Instead of typing product names one by one, I pointed Gemini Live Camera at what I was seeing.

🔗 Gemini Live Camera helped me understand an unfamiliar product in a German supermarket.

At an Apotheke, the problem was more serious: we needed to explain symptoms clearly despite the language barrier.

AI helped us prepare what to say, while the pharmacist remained the person who recommended the medication.

🔗 I used Gemini to help communicate during a real pharmacy visit in Germany.

And in Göppingen, language became a problem again—but in a completely different way.

Our Airbnb host's elderly father spoke Ukrainian, and our usual translation setup wasn't enough. I used Gemini to translate between Ukrainian and Korean so we could understand each other.

🔗 That small conversation showed me how AI translation could become useful in an unexpected human moment.

🚆 Then the trains became the real test

The most memorable AI moment came when our return journey didn't go according to plan.

Because of railway construction, the route we expected to take was disrupted. A normal navigation app could show locations and routes, but we needed to understand what was happening and what alternatives were available.

AI helped us search for information about the replacement transportation system, including the German term SEV (Schienenersatzverkehr).

But AI wasn't the whole solution.

At an unclear temporary stop, a local person helped confirm that we were in the right place.

🔗 That German train crisis taught me the difference between following a route and using AI to investigate an unexpected travel problem.

🌱 AI didn't travel for me

Looking back, there wasn't one AI tool that made the Germany trip work.

Google Docs helped us share information.

Google Sheets helped us manage the numbers.

A web app handled a problem specific to our group.

Gemini's camera helped when I needed to understand what I was looking at.

Translation helped when language became a barrier.

And when our train plan failed, AI helped us search for another way forward.

But we still needed our own judgment—and sometimes help from people around us.

That's what I brought home from Germany: AI was most valuable not when everything went according to plan, but when a real problem gave me a reason to use it.