the.com/colonnade
a row of columns marching nowhere, holding up the sky for the price of awe
originFrom Italian colonnato, columns standing in disciplined formation
functionShaded walkways letting ancients stroll without melting
vatican giantBernini's St. Peter's Square wields 284 columns
optical trickGreeks tapered columns to fool the squinting eye
hidden mathEntasis curves them so straight lines look straight