Before there was Aspen, Denver was the Colorado city name of choice, and it reentered the US Top 1000 in 2015 after a 14 year absence as a stylish two-syllable boys’ name with its trendy -er ending. Its decade of greatest use was the 1920s, when it reached as high as Number 422.

Enough parents have found naturalist Charles Darwin, the father of the theory of evolution, a worthy hero to keep Darwin relatively consistently in the Top 1000. It has a lovely meaning too—"dear friend."

As trendy as the chic Colorado ski resort, with a hint of whimsy from the shimmering trees, Aspen has been climbing the charts for boys since the early 90s. While it has always been more popular for girls, it could work for a boy too.

A laid-back cowboy name which feels both cool and gentle, Dallas has ranked in the US Top 500 since records began in 1880. Never super popular but surprisingly never out of style, Dallas is given to nearly 1400 boys in the US every year.

This lovely orange-scented Spanish place-name would make an inventive namesake for an Aunt Valerie.

Oslo, the capital city of Norway, makes for an intriguing new place name, especially with its bookended O's, as in Otto and leads to cool nickname Ozzie. One Berry has already used it and we predict others will follow; in fact, stats suggest it is used eight times more often than it was a decade ago.

Siena is a soft and delicate Tuscan town name given a big fashion boost by lovely young actress/gossip column staple Sienna Miller. A real up-and-comer.

Francisco is one of the more popular Spanish names for boys in the US, which is unsurprising given its popularity back in Spain and Portugal as well as Latin America, coupled with its classic status. It also has a cool hipster vibe to it, given the reputation of the city of San Francisco.

Unlike its somewhat formal Swiss city namesake, this is a lively and appealing place-name that also has a real history as a female name.

Extreme makeover: Brooklyn has gone from jokey Borough Boy name in the 1990s to a leading girls' name starting with B. The status of New York's Brooklyn as hipster heaven is ironic as few bona fide Brooklyn hipsters would choose this name.

You'll probably be hearing more of this name thanks to the newest Pixar film, featuring Princess Merida, the first Pixar princess--a feisty, athletic, independent medieval Scottish girl with wild red hair. Her name, however, is not Scottish, but a Spanish place name found in both Spain and Mexico's Yucatan peninsula.

With its relation to Mount Olympus, home of the Greek gods, and to the Olympic games, this name has an athletic, goddess-like aura, making it the perfect Olivia substitute.

The capital of England makes a solid and attractive twenty-first-century choice in the US where it is currently in the Top 1000. Given to nearly 1000 girls and 200 boys each year, it is a unisex option that has been in slow decline since its peak in 2013. Conjuring up images of Big Ben, red phone boxes, and the London Eye for some, but perhaps the rush hour commute and grey skies for others, London is far less popular in the UK and other English-speaking countries.

Wellington is a tony-sounding English surname turned baby name by pregnancy guru Rosie Pope, who calls her son Wells for short. It's also the middle name of one of the Sweet Home sextuplets, Blu Wellington.

One of the most familiar — if not stereotypical — Gallic names. Pierre was a Top 5 name in France from the 19th century through 1940 and is now on a steady decline in its native land. In the US, Pierre was most common in the 1980s but it has never cracked the Top 300.

Bristol Palin, the daughter of former Alaska governor and Vice Presidential candidate Sarah Palin, grabbed her own share of headlines after her pregnancy and having appearing on Dancing With The Stars. She subsequently (almost) single-handedly propelled her distinctive name, derived from the name of a city in England, into the Top 1000 and up the charts.

The Vale of Tempe is an important place in Greek mythology as well as a real place in Greece. The ancient poets wrote of it as the halcyon dwelling of Apollo and the Muses. The modern cities in Arizona and Australia are named for the Greek Tempe, which is pronounced tem-pee.

Antonio is a Shakespearean favorite -- the Bard used it in no less than five of his plays, and has long been a ubiquitous classic in Spanish-speaking countries, where the nickname Tonio is also prevalent. Antonio is also among an elite group of perennially popular names in the US, where it has always been among the boys' Top 1000 since baby name record-keeping started in 1880.

Attractive North Carolina place-name and surname of explorer Sir Walter Raleigh. Distinctive, classy-but-approachable choice for either sex.

Unseen in the USA since 1901, Boston rocketed back into the Top 1000 in 2004 and, like other place-names such as Brooklyn, London and Paris, is now a reliable presence on the list.