Editing Cliveden (section)

=== Octagon Temple (Astor family chapel) ===
[[File:Cliveden-2365.jpg|thumb|left|Giacomo Leoni's 1735 "Octagon Temple"]]
The Octagon Temple, situated 200&nbsp;ft above the Thames, was originally designed by Giacomo Leoni in 1735 as a [[gazebo]] and [[grotto]] but was later converted by the 1st Viscount Astor to become the Astor family chapel.<ref name=":1" /><sup>:15</sup>

In addition to its function as Astor family chapel, the Octagon Temple was adapted to serve as the family mausoleum in 1893. Today, three generations of Astors are buried here.<ref>{{Cite web |title=The Chapel |url=https://www.nationaltrust.org.uk/cliveden/features/the-chapel-at-cliveden |access-date=30 September 2022 |website=National Trust |language=en}}</ref><ref>{{cite web|url=http://www.nationaltrust.org.uk/wra-1356328922750/view-page/item378250/|title=From a tea-room temple to a chapel|publisher=National Trust|access-date=1 August 2014|archive-url=https://web.archive.org/web/20140528010146/http://www.nationaltrust.org.uk/wra-1356328922750/view-page/item378250/|archive-date=28 May 2014|url-status=dead}}</ref> The mausoleum contains the ashes of the 1st Viscount Astor, his son the 2nd Viscount, and of the latter's wife, Nancy Astor. The ashes of the 3rd Viscount and of [[Robert Gould Shaw III]] (Nancy Astor's son by her first marriage) are also buried here.<ref>{{Cite book |url=https://nt.global.ssl.fastly.net/cliveden/documents/cliveden-chapel-guidebook.pdf |title=Cliveden Chapel Guidebook |publisher=National Trust}}</ref>

The mausoleum's interior and dome are decorated with colourful [[mosaics]] by [[Clayton and Bell]] representing religious scenes.<ref>{{cite web|url=http://www.mmtrust.org.uk/mausolea/view/14/Astor_Mausoleum|title=Astor Mausoleum – Mausolea & Monuments Trust|website=www.mmtrust.org.uk|access-date=11 August 2017|archive-date=25 July 2015|archive-url=https://web.archive.org/web/20150725074059/http://www.mmtrust.org.uk/mausolea/view/14/Astor_Mausoleum|url-status=dead}}</ref>