The most interesting building I've ever seen has got to be the Sagrada Família Church in Barcelona. An unfinished masterpiece designed by Catalan architect Antoni Gaudí, the church is already 136 years in the making today. Groundbreaking began in 1882, and it not expected to be finished until 2026, 100 years after Gaudi's death.
One of the most polarizing architectural buildings in the world, it has been described as "greatest piece of creative architecture" and a "marvel of technical perfection", on one hand, while also being called "one of the most hideous buildings in the world" and "one of the strangest-looking serious buildings in the world" by critics.
What I find interesting about the building is its uniqueness. Classified as gothic architecture, it has a unique design compared to all the Roman Catholic churches I've seen. The whimsical, organic, and almost alive character of the building is not something you will find on other churches.
I've never been to a structure that has evoked so many emotions from me, as well. Being there made me feel a combination of awe, confusion, marvel, and at times, a little bit unsure over some of the pieces I was seeing.
Another interesting aspect of the building is the symbolism behind every little detail of the construction. From the positioning of the different facades to the decision to use strange-looking sculptures, and the number of spires to be built. Touring the site was like getting a quick lesson on the tenets of Catholicism, too.
I would love to go back to Barcelona and visit the Sagrada Família Church, again. It's not only one of the most interesting buildings I've ever seen, being there was also an amazing experience that I would repeat in a heartbeat.
Source:
Sagrada Família. https://en.wikipedia.org/wiki/Sagrada_Família