Before our trip, we decided this was something we could see on our own without a tour guide, and we were mostly right.....although I'm sure we could have learned more had there been a guide to answer our questions. It was absolutely breathtaking inside, and very imposing from the outside. There are lots of shops and restaurants surrounding it, and... More

...and it is free, there is a great icecream place nearby. The light inside is very nice on a sunny day, go there in the afternoon if you want pictures of the majestic entrance.

You have to see it because it's free and beautiful, a great photo opportunity. Don't forget to dress appropriately, as with many of the churches. It really is gorgeous but sometimes all the folks with cameras and tours get really old.

Looking at it from the outside you can tell that its majestic structure is of cultural influence. Then once you go inside it will tell you the whole picture and story of Imperialism, mankind and Christianism, that's if you are into history.

I love this monument its most fascinating - the dome with its openieng featured in the Moive Angels and Demons and so did its crypt. A must see with no fees or tickets fare!

This is SO worth seeing!!! The history is incredible - that this building is still standing! Can't say enough how incredible it is - the ceiling itself is worth seeing!!!

Amazing architecture and design. It is so rare that such an ancient building is so well preserved. It is free. It is spectacular.

This is a MASSIVE monument to mankind. The size alone is incredible but go inside & see the artwork. This is a tribute to the artist of an era.

It's beautiful and unusual but lots of tourists! The time we were there was especially remarkable because they offered a early evening mass.