I know I’ve had it during trivia games: “What is the largest port in Europe?”
Answer: Rotterdam.
Of note are the Cube House residences by architect Piet Blom pictured here. They literally hang over the street and once you are inside containing no walls at 90-degree angles, making it quite a challenge to place furniture. I only know this because I looked up a story about the interior. Apparently, residents of the 1985 complex were so harassed for a peek inside, one owner opened a museum and another offers hotel-type leasing options. I think a quick look inside would suffice.

