If we had to choose one unique feature of Catalonia that cannot be found anywhere else in the world, it would undoubtedly be the Castellers (the Human Towers). Inscribed in 2010 as Intangible Cultural Heritage of Humanity by UNESCO, this spectacle demonstrates the importance of unity and joint effort. Tarragona hosts the most important competition, the Concurs de Castells, every two years. I get emotional and cry every time I watch a castell in person. It's such an amazing feat and some of the children who crown the tower are only 3 years old! My mother suffers from vertigo and never wanted us to join the human tower teams, so we have always been spectators. Seeing hundreds of people supporting each other and climbing on each other's shoulders until the tower is completed with the enxaneta (the child who crowns the tower) is hugely exciting. I remember in 2016 when the Castellers de Tarragona built the tallest tower in their history. It took 500 people working together to create this 10-tiered, 15 metre tower. There was no room for us in the square. It was extremely hot and not a breath of wind. The silence and tension seemed endless. The gralla, a unique high-pitched flute from this region, is usually played at the start of the tower-building, but when people are climbing higher on top of each other, the gralla falls silent too, allowing participants to concentrate. If one person in the human tower loses their balance, everyone falls like a pack of cards and can hurt themselves badly. The teams compete against each other, but I love the fact that, during the competition, some teams help others from the bottom.