Theatre of Opera and ballet after Solomiya Krushelnytska, 1897 - 1900. (It was built between 1897 and 1900)
This is postmarked in 2014 with three Ukraine stamps - one N and two 50.
The sender writes:
On this card you can see the 3rd most beautiful European Opera House, the architect of which committed suicide after learning the theatre was going to collapse due to his incorrect plan (it had been built on the river). But fortunately, many tourists have been able to feast their eyes on it for more than a century. It’s definitely worth visiting so welcome to Lviv!