Adelaide is now heading straight uphill on the coattails of such newly popular sisters as Ava, Ada, and Audrey, and in the company of Adeline and Amelia. It was chosen by actress Katherine Heigl for the name of her second daughter.
 Adelaide gained fame as the noble German princess who married the British King William IV in 1830 and became known as "Good Queen Adelaide," inspiring the name of the Australian city and a craze for her name. Earlier, St. Adelaide was married to Otto the Great and became Empress of the Holy Roman Empire, described as "a marvel of beauty and goodness."
 When Aussie actress Rachel Griffiths (also mother of son Banjo) chose Adelaide for her daughter, she said she'd been inspired by the city, Miss Adelaide in Guys and Dolls, and the Disney character in The Aristocats. Adelaide can also be found in works by Thomas Hardy and Agatha Christie.

Adelaide

Alexandria turns Alexandra into a more distinctive place-name, in both Egypt and Virginia.

Alexandria

Evocative Spanish city name that would make a one-of-a-kind given name.

Almeria

Breton

This name of a touristed island in sight of Los Angeles makes an attractive and newly stylish variation on the classic Catherine or overused Caitlin. 
 Santa Catalina of Siena was, along with Saint Francis, one of the two patron saints of Italy and was a respected spiritual writer of the Church. Catalina de Aragón y Castilla is the original Spanish name of the first wife of Henry VIII, known to history as Catherine of Aragon. In a completely different vein, Catalina Aruca was a character on the sitcom My Name is Earl.

Catalina

Corsica, the picturesque Mediterrean island birthplace of Napoleon, makes an easy switch from atlas to baby name book, with its delicate, feminine ending. Just don't consider neighboring island Sardinia. 

Corsica

Casoria

Edessa

Galicia

Guyane

Politics aside, the Cuban capital is one of the most rhythmic of place-names. The question is: can politics be put aside? 

Havana

Modena

Magadha 

Malindi

Martinique

Mayotte

Nicosia

Sienna has been a Top 100 choice in England & Wales since 2005, the year after Sienna Miller's acting breakthrough in the hit movies Alfie and Layer Cake. In the US, it also got a big boost in the early noughties, before dropping slightly then rebounding to reach an all-time high in 2022.

 Now the name Sienna has gotten maybe its biggest boost of all when it was announced as the name of the daughter of Princess Beatrice and Edoardo Mapelli Mozzi. The royal baby, born in 2021, is named Sienna Elizabeth. Cable newsperson Campbell Brown also chose Sienna for her daughter, as did Kevin James. 
 
The historic Tuscan city is spelled Siena, but the Sienna spelling is the one used recently by Princess Beatrice for her daughter. Sienna, also the spelling used by American-born English actress Miller, is more popular than Siena in the English-speaking world. 


 The city of Siena is said to have been founded by Senius and Aschius, two sons of Remus. The name of the city may derive from Senius, although other possibilities include Roman or Etruscan family names, a Gaulish tribe name, or a Latin root meaning "old". 

 The English color word "sienna" ultimately comes from the name of the iron-rich clay in the Italian city, brownish yellow when raw and reddish brown when burnt, making this a vibrant color name as well as a romantic place name.

Sienna

Surabaya

Vienna is one of the more popular of the European place-names, with a particularly pleasant sound, evoking elegant images of the Blue Danube, of castles and cafes, sweets and sausages and Strauss waltzes—and Sigmund Freud. It could be a possible substitute for the popular Sienna. 
 While many see place-names as a recent invention, Vienna has been used as a name for centuries. It was, for instance, the name of a 15th century mother of a saint. Joan Crawford plays a strong-willed saloon keeper in the classic 1954 western drama Johnny Guitar. And there was also a Vienna in the F. Scott Fitzgerald story "The Bowl."
 Trivia tidbit: Vienna's Roman-era name was Vindobono.

Vienna

Vaisali

Yvelines

Zeila, the name of a port town in Somalia, has cultural resonance and an appealing sound. 

Zeila

tatdaisie's list "Unique Place Names for Girls" of 23 great name ideas: Adelaide - Zeila!