S. Nicolò l'Arena sundial	::: << Prev ::: Thumbs ::: Next >> :::
	163 of 226. An interesting detail is the 130 foot long marble section that runs along the floor. The precise measuring instrument was made between 1839 and 1841 by two astronomers. It uses the light that passes through the hole on the vault of the transept 75 ft above to mark the hours, days, months and zodiac signs.