Very interesting and fun place to check out. Try to get to Sintra early in the morning to beat the crowds. We took the train from Lisbon (Rossio station) and quickly walked up the hill to the Well. By the time we came out of the Well, there was a very long line of people waiting to go in.

We had a bit of a wait (long line) but it was worth it. We went when it was said to be less crowded but that wasn't the case. There were a few tour groups there and I guess the last of the summer visitors. This has been on my bucket list for years and I am so glad I finally had the chance to do it. It can get a little claustrophobic going down but once you're down there it's fine. (it was only because there were a lot of people in front and behind us) I only wish we'd had fewer people and a little more time to be able to go down and enjoy the view and not feel rushed, but I understand that they wanted to get everyone through.

This well is almost 27 metres deep and located at.Quinta da Regaleira. Amazingly it was never used as a well and built for secret ceremonial purposes. Its also an entrance to a series of underground entrances and walkways. One can walk down the spiral staircase that leads down to the bottom of the well. Its a really interesting place to visit and great for photo opportunities.

The well is simply crazy. It really is awesome. we were in the off season but the line still had 300 people in it, but it moved fast and we were in the well in 25 minutes. This thing never had a real purpose, it was just built to be cool and it was.

Very long lines. Worth a look if you have time but personally I would spend more time at Pena and the moorish castle than this place. You stand in line for ages for a 5 mix attraction , but the tunnels underneath at bottom are interesting.

I enjoyed this area a lot and the well was very cool. The line looks horrible but goes really fast. The inside of the well is very impressive but the stairs can be slick in the wrong shoes. The cave was easy and well lit. The waterfall was a nice surprise.

Certainly enjoyed the walk through caves to the inverse tower. You cannot experience this anywhere else. Being faced with 3 exit choices we decided we need to see All 3 as most did. I enjoyed it.

Went to Pena Palace first, so arrived around 12:30. It is a good half mile walk form where the bus will drop you off. Mostly up hill, so wear good walking shoes. As you approach the Quinta da Regaleira you will pass the exit first. The entrance is around the corner (about 200m up hill). I purchased my ticket in advance, so that saved a little time. When I got in I headed straight for the well (about 200m up hill). The queue for the well extends past the entrance (about 100m up hill). It took about an hour total to get through well. A little smaller in diameter than pictures would leave you to believe, but very interesting. Definitely the highlight of Quinta da Regaleira.

This is where everyone heads, as should you. This is the only attraction that left an impression during our visit. The line moves quickly, you descend into the ground on a spiral staircase with a small waterfall at the end. Fun, but quickly visited, unless you need to take a hundred photos on the way down.

Itinitation Well is located in the Quinta da Regaleira park and is one of the main attractions of this place. Despite all the scares in other reviews, the line was impressive at first glance, but moved very quickly. The stay inside itself will not take more than five minutes, but the impression is incredible, as if you were in space. It's an inverted 90 foot tower that goes down nine stories underground. Each floor is a symbol of one of the mortal sins. Each half-floor is a vice. After passing through purgatory, at the bottom, you'll walk through a cave and emerge into the light at a nice waterfall, cleansed of all your sins and happy to have gotten out of there.