Bow your head, say a prayer and maybe even light a candle in Holy Trinity Cathedral. This grand religious building may not always be open, so check ahead for hours if you'd like to see inside.
This principal church won't cost you a cent, which is great news if you're chasing free things to do. You'll find Holy Trinity Cathedral in Karachi. There are plenty more places to discover not far away, including Pakistan Maritime Museum, Clifton Beach and Manora Beach.