![Click to enlarge: Galarus Oratory 2 [f/5.6, 1/100 sec, 18mm-e, ISO 160, DMC-G3]. Tagged with Monument, Subject](https://markus-spring.info/wp-content/uploads/sites/2/2012/09/20120826-160206mws.jpg)
The Gallarus Oratory is a predecessor of our churches (I guess the terminus “oratory” is used because of the uncertainty about the consecratedness of the building), built only from stones roughly 1000 years ago. Astonishing enough, it survived this time intact and still waterproof, built from nothing but pure stone.