Sant'Ignazio
The St. Ignatius church in Rome was built between 1626 and 1650. The interior is full of interesting ceiling paintings.
If you walk to the center of the church, you'll see a "dome" above. The dome is a fake, but it sure looks real, especially from the side
Researchers believe that the original project ran out of funding, so they hired a skillful painter to paint the fake dome.
