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The 1,000 year old Gallarus Oratory in Ireland is a drystone church with a corbelled roof and an upturned boat shape. It's considered one of the best-preserved ancient churches in Ireland. Built without mortar, using cut blocks of local sandstone the stones are laid at a slight angle, lower on the outside than the inside, to allow rainwater to run off. The walls are 1.2 meters thick at their lowest point. The structure is made of a single continuous corbelled vault. The interior is dimly lit, with a small window on the east wall. The interior room is approximately 4.8 meters (16 ft) by 3 meters (10 ft) submitted by /u/Kikiholden |
