1.- What is the tallest human tower of the world?
The tallest human tower is "3 de 10 amb folre i manilles". This is 10 levels higth and three persons every floor.
2.- Where human castles are built?
The human castle they are built in Catalonia, but in Tarragona (a part of Catalonia) every two years, we celebrate the contest of human towers. You can view pictures here.
https://cat.elpais.com/cat/2018/10/07/album/1538933453_943495.html#foto_gal_8
3.- What ancient monuments are in Tarragona?
In Tarragona, we have a lot of Roman monuments. The most popular are the amphitheater, the Roman circus, or the Ferrerias aqueduct. All this monuments are two thousand years old.
4.- What activities can you do in Tarragona?
You can to go snorkelling in a sumerged boat, visit the old part of town with a lot of museums, or go to shopping.