Complex sentence: The tower is 150 feet high and was built between 1793 and 1804 and is the work of Barranco Alonso, who started Casaus Isidro and that's it.
Split into simpler sentences: The tower is 150 feet high and was built between 1793 and 1804. It is the work of Barranco Alonso, who started Casaus Isidro and that's it.