The Vatican Museums are full of artistic and historical treasures by some of the world's greatest artists. Inside you’ll find epoch-defining masterpieces from Michelangelo, Raphael, Leonardo da Vinci, Titian and Caravaggio (to name a few).
The collection, housed in 54 galleries, includes the statue of Laocoön, the Apollo del Belvedere, the Gallery of Tapestries, the Gallery of Maps, and of course, the Sistine Chapel, with Michelangelo's renowned frescoes. The artwork here changed the course of Western art.
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St Peter's basiclia is amazing. It's free entry but queue is quite long but moves fast. We went around 12.30 and the queue wasn't as long as earlier in the day.
A must visit.
Other than that, the architecture is pretty impressive. =)