Chapel of St John the Baptist

You've arrived at one of the most expensive chapels ever built, a masterpiece that was constructed 2,400 kilometers away and shipped here in pieces. The Chapel of St John the Baptist inside the Igreja de São Roque was commissioned by King João V in the 1740s as the ultimate display of Portuguese wealth. Instead of building it locally, he hired the finest Roman artists to create it entirely in Rome using the rarest materials on earth: lapis lazuli from Afghanistan, amethyst, agate, ivory, and precious metals including gold and silver.

The cost was staggering. Historical records suggest it became one of the most expensive religious commissions in history, funded by gold flowing from Brazilian mines during Portugal's peak prosperity. After Pope Benedict XIV blessed it in 1747, workers carefully dismantled every piece and loaded it onto three ships bound for the Portuguese capital. It took five years to reassemble inside this church, finally completing in 1752.

What looks like painted artwork on the walls is actually intricate mosaic made from thousands of tiny stone pieces, a technique ensuring the colors never fade. Every surface tells the story of an empire at its wealthiest, when no expense was too great for devotion.