Which Renaissance architect designed the Tempietto in Rome?

Donato Bramante designed the Tempietto in Rome. Built in the cloister of San Pietro in Montorio around 1502, the small circular chapel is regarded as one of the clearest masterpieces of High Renaissance architecture.

The Tempietto was commissioned by Ferdinand of Aragon and Isabella of Castile and marks the traditional site of Saint Peter's crucifixion. Bramante drew on ancient Roman architecture, using a circular plan, a ring of Tuscan columns, a classical entablature, and a dome. Its compact proportions give the building the appearance of a perfectly ordered ancient temple.

The name “Tempietto” means “little temple.” It is sometimes confused with later Renaissance buildings by Palladio or with Brunelleschi's architecture, but the Roman martyrium is specifically associated with Bramante. His work on the Tempietto also helped establish ideas later used in his plans for Saint Peter's Basilica.