Complex sentence: Today, Carpenters'Hall is free to the public, with over 150,000 tourists from around the world who come each year to visit, while the structure still serves the same purpose for which it was built--as a meeting place for the Carpenters' Company.
Split into simpler sentences: Today, Carpenters'Hall is free to the public, with over 150,000 tourists from around the world who come each year to visit. And the structure still serves the same purpose for which it was built--as a meeting place for the Carpenters' Company.