![According to the Website "King Lalibela,"
"Bet Medhane Alem is the largest monolithic rock-hewn church in the world, measuring 11.5m [37' 8"] in height and covering an area of almost 800m2 [8,610 squa](/pics/lalibela/bet-medhane-alem-exterior.jpg)
Bet Medhane Alem — the House of the Saviour of the World — is the largest monolithic rock-hewn church on earth. The 72 pillars arranged in rows recall a classical basilica, which isn't accidental: the design is believed to have been influenced by the ancient Church of St. Mary of Zion in Axum, hundreds of kilometers to the north.
© A. Davey from Where I Live Now: Pacific Northwest, CC BY 2.0, via Wikimedia Commons