Persecuted Catholics
The two of them removed the iron grille in a basement grate. It had a hole that a child could enter. When they went through it, they found something that looked like some sort of chapel. They found out that it dated back to the 18th century. It must have been a secret Catholic Church from that era.

Persecuted Catholics
Hidden Room
A man had been renovating his house when he found a hidden room after taking down a wall. Even though this was already exciting on its own, he discovered another one after that. It turned out that he was looking at part of an underground city called Derinkuyu. The Hittites created this series of tunnels.

Hidden Room