The city is just a backdrop.
It's the couple that makes it appear romantic.
Go to any large city where there are various activities, restaurants, theaters, nightclubs, and tall buildings lit up at night with a skyline and it almost feels magical. A sort of urban Christmas tree!
Whether it's Chicago's Lakeshore Drive/Michigan Ave, San Francisco, LA, NYC, Pittsburgh, Seattle, San Diego, Paris, & so on.
Every major city lit up a night that has pedestrian traffic wandering through shops/restaurants/nightclubs and taxi cabs cruising the streets looks similar. They all have 5 star hotels..etc