Guastavino tile is a special type of tile that is used to make big and beautiful buildings. It was named after Rafael Guastavino who invented it a long time ago in Spain.
The tile is made from a mix of clay and cement and is very strong and durable. It is also very thin, about as thick as a quarter, and comes in different shapes and sizes. The neat thing about Guastavino tile is that it can be arranged with no grout, which is usually used to hold regular tiles together. This makes it look really elegant and smooth.
When builders use Guastavino tile, they make patterns and designs with it, like putting them in domes, arches, or curvy ceilings. They put the tiles on top of each other like building blocks to create big and strong structures. The buildings that are made with Guastavino tile are super pretty and unique, and some of them are still standing after more than 100 years!