Torre da Regaleira

You can go up all the towers on the property and they provide good views of the gardens and of the moorish castle on a nearby hill. That being said, it’s usually only one staircase for both up and down, and the staircases are very narrow so you can’t do any passing. You’ll spend a lot of time waiting for your direction to have a turn, and you’ll be squashed up against sweaty strangers most of the time. In my opinion, you only need to go up one tower before you can basically say you’ve seen it all.