Posts about Travel

Although I would not consider myself an intensive traveler, there have been a few trips that have been quite memorable. I find it very joyful to persist my experiences in a long blog post and often start to write while I am still on the go. This way the memories are fresh and I can share the wonderful little impressions that I have gathered.


A State of Trance in Utrecht, Netherlands (2020)

I've been to a few Trance events, like the Armin Only concerts. In early 2020 there has been a large festival with A State of Trance (ASOT) Episode 950 in Utrecht. Together with a friend I bought tickets and went there.

My sleep cycle usually has me spending the hours from like 23:00 to 06:00 in bed. Going to a concert which goes from 22:00 to 06:00 was going to be quite exhausting for somebody who is not nocturnal. I tried to sleep in but could only get to 10:00, so it was going to be around a 24 hour shift.

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Conferences in Wǔhàn (武汉市) & Běijīng (北京市), China

In the summer of 2019 I was able to spend four weeks in China. One week during The 37th Annual International Symposium on Lattice Field Theory (just "Lattice 2019" by the people in the field) in Wǔhàn (武汉市) and three weeks during a summer school "Frontiers in Lattice QCD" in Běijīng (北京市).

You can find all pictures in the Google Photos album. I have a bunch of images in this articles, but I took too many to show them all here. This article contains 19,029 words and 111 images. Have fun!

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City Trip to Groningen, Netherlands

This trip to Groningen is the sequel to my last bike trip to Utrecht & Holland. My brother was finishing up his studies in Groningen, so I took the opportunity to visit him there and take a look at the city.

The booking process via the telephone was quite cumbersome last year, so this time I just searched the connections for one that was suitable and booked it in the Reisezentrum at the main station in Bonn. The process was really smooth as the agent just entered my details, I payed with debit card and got printout of all the tickets. Again there was a slew of documents for both ways of the trip:

  1. Travel itinerary
  2. Train ticket for me
  3. Bike ticket
  4. Reservation for bike rack

The connection that I got had a bunch of transfers:

Bonn → Düsseldorf → Arnhem → Zwolle → Groningen

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City Trip to København, Denmark

København has been on my list of cities to visit for a while. Recently my friend Chris's girlfriend started her PhD in that city and moved there. He had invited me to visit them there, and that it what I have done in this trip.

As the city is known for its cycling infrastructure, I have done this trip with the bike in mind; similarly to the trip to Utrecht & Holland.

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Meeting in Poznań, Poland

In September 2018 the collaboration that I am part of, the European Twisted Mass Collaboration, short ETMC, had one of their bi-annual meetings in Poznań, Poland. This time I got to attend the meeting as well.

As usual I have researched train connections first. At the time of booking there were only connections with around 5 transfers and a bus connection over the border. Trips would have taken around 12 hours from Bonn to Poznań. However at the time of writing this article there seemed to be a somewhat sensible connection taking about 8 hours:

  • Bonn to Köln with IC
  • Köln to Berlin with ICE
  • Berlin to Poznań with EC

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Bike Journey Through Utrecht & Holland, Netherlands

Going on bike trips around Bonn is not so much fun. The roads near the Rhine river are too small for pedestrians and cyclists going both ways. In the city the bike infrastructure feels like a timid afterthought. During a vacation to Zeeland in the Netherlands a couple of years ago we had amazing bike trips. At some point I wanted to do a longer bike trip in the Netherlands, and I just did the first one of them in the region of Utrecht and Holland. I took my bike in the train to Utrecht, rode it from city to city and took it back home in the train from Rotterdam.

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Vacation at Hacienda Buena Suerte, Spain

In Februar and March of 2018 we have been at the "Hacienda Buena Suerte" again. This time we took the ICE train from Siegburg to Frankfurt and then the plane to Sevilla. I really like traveling with the ICE, especially on that particular connection where it displayed 301 km/h at one point.

While I was there I hiked a bit around the ranch, there is plenty of space to spend a couple hours.

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Vacation in Mallorca, Spain

In the fall of 2017 my family took me to Mallorca. Even though it is also known for the chaotic German and British tourists, there is a lot of nice landscape for hiking as well as the Mediterranean Sea. We had booked a holiday house in Can Picafort.

The cheap flight that we had booked took us to La Palma in the evening. As we were six people my parents booked an airport transfer and we got picked up in a large taxi. The ride was surprisingly fun as the driver engaged in our conversation. At the Köln-Bonn Airport wer did not have to wait long until we could check in our luggage and go through the security check.

The flight itself was uneventful, the fun started when exiting the plane in La Palma. Even though drunk tourists were to be expected, I was still taken by surprise that a group of young German men carried a five liter party keg of Kölsch beer. As I left for the restroom I overheard them or a similar group notifying the others vocally that they had to urgently pee. Judging by the moaning sounds from the stall they had already made a big dent into that party keg on the flight. These are the moments where I am a bit embarrassed to share the nationality.

Outside the airport we called the car rental service and got picked up. The cheap rental services are usually a bit away from the airport and you need to take a shuttle. Once there it took ages until we got our cars. Then we need to drive to the other end of the island in the dark. Google Maps navigation routed us through smaller and smaller roads until we got a gravel one. We turned around and eventually made it to the holiday house. There a huge platter with fresh fruit and vegetables was waiting for us, a very pleasant welcoming gift.

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Workshop at CINECA in Bologna, Italy

In March 2017 I got invited to the CINECA supercomputing facility in Casaleccio di Reno near Bologna in Italy. They had recently installed their latest system, the Marconi A2 powered by Intel Xeon Phi 7250 CPUs. My colleague Peter and I had worked on the QPhiX library which explicitly targets these type of processors.

Both of us applied for this two day workshop and got accepted with our talk. Although the workshop started at noon and ended at noon the following day, it was cheaper for us to stay two more nights and take other flights. Fortunately Lenovo covered both the flight and the hotel, so this trip was pretty much a gift. Also we did not have to book anything, we just got a flight ticket send to us.

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