
1) Tourist attraction in London
Found on
https://www.crosswordclues.com/clue/marble-arch

Marble Arch is a 19th-century white marble faced triumphal arch and London landmark. The structure was designed by John Nash in 1827 to be the state entrance to the cour d`honneur of Buckingham Palace; it stood near the site of what is today the three bayed, central projection of the palace containing the well known balcony. In 1851 it was reloca....
Found on
http://en.wikipedia.org/wiki/Marble_Arch
[Libya] The Marble Arch, also Arch of the Philaeni (Arco dei Fileni), formerly known in Libya as El Gaus (i.e. `The Arch`), was a monument in Libya built during the days of Italian colonization. The arch marked the border between Tripolitania and Cyrenaica, and was located on the Libyan Coastal Highway (at that time Via Balbia) near Ra`s La...
Found on
http://en.wikipedia.org/wiki/Marble_Arch_(Libya)

Triumphal arch in London in the style of the Arch of Constantine. It was designed by John
Nash and John Flaxman (1755-1826) in 1828 to commemorate Nelson's and Wellington's victories, and was...
Found on
http://www.encyclo.co.uk/local/20688

Marble Arch is London Cockney rhyming slang for starch.
Found on
http://www.probertencyclopaedia.com/browse/ZM.HTM

Triumphal arch in London in the style of the Arch of Constantine. It was designed by John Nash and John Flaxman (1755–1826) in 1828 to commemorate Nelson's and Wellington's victories, and was originally intended as a ceremonial entry to Buckingham Palace. In 1851, after the completion of Buckingham Palace, it was moved by Edward Blore ...
Found on
https://www.encyclo.co.uk/local/21221
No exact match found.