One of the most prominent monuments in Porto is the Clérigos Church,
a tall tower built on a tall hill.
The chapel, on the lower level, is handsomely decorated and has a magnificent organ.
We were treated to a virtuoso performance of Bach.
(A Lutheran's music performed in a Catholic church, a pleasant surprise.)
One can hike up 200 steps to the top viewing platform,
and get some splendid views of the city below.