Ceremonial Plaza and the unique elliptical structure of the Temple of the Sun, which exhibits classic Inca mortar-less stonework, at Ecuador's most important Inca site, Ingapirca, Canar Province, Southern Highlands, Ecuador, South America

Ceremonial Plaza and the unique elliptical structure of the Temple of the Sun, which exhibits classic Inca mortar-less stonework, at Ecuador's most important Inca site, Ingapirca, Canar Province, Southern Highlands, Ecuador, South America

Prato della Valle, a 90000 square meter elliptical square in Padova, the largest square in Italy, Padua, Veneto, Italy, Europe

Prato della Valle, a 90000 square meter elliptical square in Padova, the largest square in Italy, Padua, Veneto, Italy, Europe

Detail of the Colosseum, an elliptical Roman amphitheatre, UNESCO World Heritage Site, Rome, Lazio, Italy, Europe

Plaza Moyua (Elliptical Square), Bilbao, Basque Country, Spain, Europe

PROBA-3 satellites in orbit, artwork

PROBA-3 satellites, artwork

PROBA-3 satellites in orbit, artwork

A 360° panorama of the elliptical shaped Piazza dell’Anfiteatro in Lucca on a sunny afternoon, Tuscany, Italy

Plebiscito Square, Naples, Campania, Italy, Europe