It is perhaps human nature to remember a bad experience much more clearly than a good one. When it comes to airports, it is difficult to stand out positively especially when a large number of people in those airports are miserable. Airports are crowded, noisy, anxiety-inducing places where by nature one must wait in multiple soul-crushing queues to get anywhere they want to go. While certain airports like Singapore’s Changi or Hamad in Qatar are lauded for their open spaces or design aesthetics, there is far more to what goes into a “great” airport. While botanical gardens or swanky lounges improve the airport experience, at the end of the day, people just want to get from point A to point B without losing their minds.

Are the security lines long? Does border control take six hours? These are important questions an airport management company should ask themselves. Lisbon’s Humberto Delgado International Airport is just so bad, that it exists in its own universe, independent from all other airports in the world. Its lines are apocalyptically bad, its food and shopping options are limited, and the overall design of the airport itself is frankly nonsensical.

From the moment you set foot inside the airport, you are already in the wrong spot. You find yourself in the arrivals hall, which is fine if you’re hawking a ride service, but not ideal if you are a passenger. You will need to find a way upstairs to check in. If you have ever been in an airport before, you would expect the check-in counters to be arranged in rows or at least next to each other. Unfortunately, the designer of Lisbon’s airport has never been in any other airport, so the arrangement is haphazard and in a zigzag pattern that require people travel down narrow corridors or up and down ramps just to check in.

Now that you have checked-in, you can proceed toward the gates! Mind you, this will likely require you to backtrack against the flow of the people pushing their way down narrow hallways just to check-in, but best of luck to you. Security lines are . . .average. You can only expect so much from airport security, and the ones in Lisbon will probably meet your expectations. After passing through security, you may thinking, “Where’s the terminal?” And that’s the beauty of Lisbon’s minimalist thinking. Less is more. Walkways are narrow, shops are few, and the waiting area next to the gates is virtually nonexistent. If you are a people person, that’s great, because you are about to be amongst a lot of people, whether you like it or not.

Now this is all if you are departing from Lisbon. Arriving there is a whole different animal. Did you book an international flight connecting through Lisbon with a four hour layover? You will miss your flight. The customs lines are absurdly long. But why? Do all of the non-EU flights arrive within five minutes of each other? There are reports of this line taking multiple hours. Again . . . Why? Lisbon is only the 16th busiest airport in Europe. Major European airports like Charles De Gaulle, Heathrow, Schipol, or Istanbul have far more passengers passing through their doors and seem to manage their customs lines better. As of late, some staffing issues and strikes may have complicated that, but on a “normal” day, the 16th busiest airport in Europe has no reason to have a customs line that could take six hours. I have passed through airports in developing nations and communist regimes that have had a more efficient process. There is simply no excuse for this in Lisbon.

Being the objective writer that I am, I was curious to see if our experience was unique or the norm. I am very sad to report to you that our two hour wait in customs was a “good” day by Lisbon’s standards. It can be much worse. Business Insider recently ranked 132 of the world’s airports on a multipoint scale involving on time performance, service quality (cleanliness and efficiency), and lastly food and shops. Lisbon’s airport scored last. Dead last. Out of 132 airports, Lisbon is the worst. Interesting to note as well, nearby Porto airport was eighth to last. It is something to consider if you ever plan to go on a trip to Portugal. You could fly to Madrid, rent a car, and drive six hours to Lisbon and have a reasonable chance of getting there before people have cleared the customs line. And that is why the Lisbon Airport, is actually statistically proven, to be the worst in the world.