The phrase 'romantic backdrop' is correct and usable in written English.
It can be used to refer to a setting or landscape that is particularly beautiful or picturesque and adds an air of romance to the context. For example, "The sun setting over the lake created a stunning romantic backdrop for the couple's evening stroll."
Adrianne Lobel's set -- a romantic backdrop of the city skyline featuring layered silhouettes of ziggurat skyscrapers soaring to the theater's significant heights -- is simple and appealing.
Outside, along the river, is one of Singapore's most pleasant restaurants, IndoChine, where the lights of Boat Quay serve as a romantic backdrop for dinner.
Château de Blandy-les-Tours, a turreted castle about 45 minutes from Paris, has been rescued from 200 years of neglect and turned into an exhibition space that showcases contemporary art against a romantic backdrop of Medieval architecture.
The Associated Press reports that the photographer, Wang Qiang, was set up outside the century-old French missionary church there, no longer in use but still popular as a romantic backdrop for wedding portraits.
Renaissance and art-nouveau architecture provides a romantic backdrop to an increasingly hip destination; the newly opened Baltazar Hotel, with rooms by cutting-edge designers, is just one example, while the eighth district – previously a no-go zone – continues to flourish, with galleries and laid-back cafes.
That modern humans and Neanderthals shared the land around Manot cave 50,000 to 60,000 years ago means that the rolling hills of what is now Galilee may have provided the romantic backdrop to the spell of interbreeding that left non-Africans with a smidgen of Neanderthal DNA.
Lucas liked the idea of a sci-fi saga unfolding against a Romantic, swashbuckling musical backdrop, and Williams responded artfully.
As secular scripture, the Western was a natural backdrop for romantic heroism.
This river often served as the backdrop for romantic artist Francisco Goya.
These items, even when placed right beside a busy highway, are supposed to provide the right romantic atmosphere, and a backdrop for the inevitable photographs and videos.
When I first read the script, it felt really visceral and languid; very romantic but against the backdrop of war and the brutality behind it.
