Copper Valley

Miedźnicy Doliny is an area in Poland best known for housing the village of Mazurka, where the ballet Coppélia takes place. However outside the fairytale town, the Doliny are also home to many of the biggest technology corporations in the kingdom, particularly in the field of robotics. The valley combines the old with the modern, and also contains a bustling arts scene that's highly popular with aspiring performers and tourists.

Geography
As the name suggests, the region is located within a valley, enclosed by hills, some with towns and some left natural, with grasses and preserved woodland. The emphasis on maintaining an idyllic setting for the ballet has paved the way for many conservation schemes and a quota to maintain a consistently low level of pollution. This allows for the natural area to flourish, again making this popular for tourists hoping to embrace nature.

Mazurka
The setting of Coppélia remains a very small and rustic town, full of town squares for dancing. Over the years, it's been prettied up, with perfectly paved streets and carefully maintained plants. It seems to have escaped the gentrification effect (or rather, it was deliberately forbidden, around the time they knocked down the ugly buildings ew) so local family run stores and crafts are still prominent. The architecture is baroque, but small with red brick buildings. (Think Warsaw)

One of the most famous places in Mazurka is the biggest plaza where tourists can watch or participate in daily Mazurkas and learn other dances. The second is Coppelius's workshop, which is preserved as a museum outside of the brief time period when the ballet takes place. (There's a more private and permanent, if downsized workshop for the Coppelius near it)

Technology
Outside of the radius round Mazurka preserved for destiny, there lie some far more modern cities, mixing skyscrapers (not too high though, they might be visible from Mazurka!) and converted factories with the baroque. There are many, many robotics labs and computer firms situated in the valley, and annual robotics coventions are often held here.

The Arts
Opera, dance and acting are big. Rivalling the picturesque charm of Mazurka are the grandoise theatres and opera houses. Many big names through history performed here, and they've become highly iconic. Many aspire to perform here some day.

The valley also has some very esteemed dance and music schools. Many ballet-destiny students attend these which is a large factor in growing these school's reputations. Heck, many of the students chosen for destinies are chosen from the attendees of these schools. Due to this, demand for places is high, despite the expensive fees.

The indie art scene and night life are also very big, full of small and uncoventional bands and buskers aplenty.

Trivia

 * Miedźnicy Doliny translates out to Copper Valley. You can probably guess what it's referencing.
 * Mazurka is a traditional polish dance that was incorporated into the ballet. It's pretty iconic for the ballet.