A night time visit to Basilica di Santa Maria Gloriosa dei Frari, or "Frari", one of the most famous churches in Venice. It was dark in the square, the doors were ajar, most of the light inside was from candles, it was deserted. I immediately started channeling The DaVinci Code. The painting above the main alter is the Assumption by Titian (also below). Wow.
Spooky tomb where Canova's heart is buried. I'm sure Robert Langdon would not hesitate to enter.