Exedra

The original Greek word ἐξέδρα ('a seat out of doors') was applied to a room that opened onto a stoa, ringed with curved high-backed stone benches, a suitable place for conversation.

A basilica featured a large exedra at the far end from its entrance, where the magistrates sat, usually raised up several steps, in hearing cases.

In Muslim architecture, the exedra becomes a mihrab and invariably retains religious associations, wherever it is seen, even on the smallest scale, as a prayer niche.

A classic example of a Baroque exedra on a (comparatively) reduced scale within its context, is the central niche of the Trevi Fountain in Rome, sheltering a statue of Neptune.

The Spreckels Temple of Music in Golden Gate Park in San Francisco is another example of such a free-standing classicized bandshells Public monuments without any covering use a freestanding semicircular exedra with a bench, often to give a platform to a statue, for example at Abraham Lincoln: The Head of State monument in Grant Park (Chicago), the Houdini grave in New York, and the Signing of the Mayflower Compact Bas Relief in Provincetown, Massachusetts.

[8][9] Its architect was Eric Gugler, and in 1932 it was executed by the Piccirilli Brothers studio, the firm that carved the Lincoln Memorial in Washington, D.C.[8]

Exedra of Pamphilidas, Acropolis of Lindos, Rhodes , Greece
The foundations and partial floor of a late Roman villa . The floored part is the exedra. The rest of the floor has deteriorated and is missing, with only parts of the hypocaust columns remaining. Hot air circulated through the hypocaust to heat the house.
Open-air exedra with bench – the Abraham Lincoln: The Head of State monument in Grant Park, Chicago
Exedra in Painswick Rococo Garden, dating from the 1740s