Some impression of a short way to the 2nd largest city of Bulgaria and former capital….
The night was ok… never saw such a less expensive breakfast: large scramble eggs plate incl hacked tomatoes, ham, cheese for less then one 1€!
When you walk into the third floor with all bagages, you need motivation: 
Exhibition centre:
Working power plant…
Most common view: agricultural building
Military plane are quite often seen..
The sanitarium complex: enter here and you get the feeling of falling back behind the iron curtain. Including the smell of diesel for the heating. But you get mineral shower water…which means: smell a bit like eggs and may have hydrocarbons… from the feeling on the skin, it could have a higher pH because it feels soapy: 