This is a photo of Roman ruins in Turkey. The sender is an artist and this is his website www.bernieqeo.eu if you are interested in checking out his work. I did and he has a lot of cool stuff. 

Kostroma ( Кострома́)  was founded in 1152 by Yury Dolgoruky, but it is thought to be much older. Today it has a population of 270 000 people. 

This card from Vilnius shows some of the various churches found in the capital city. Church of St. Johns ( Šv. Jonų Bažnyčia) is located at the Old Town of Vilnius and dominates the Vilnius University ensemble. The Jesuits were the first professors and they and their students used to pray at the church. Theologians would give sermons here and it was a place for performances and disputes, where theses were defended and kings greeted! It was built between 1388-1426; reconstructed in the 16th and 17th centuries. During Soviet times the church was closed down and severely damaged. During Nazi Germany's occupation, the church's reverend, Alfonsas Liniūnas, delivered rebellious sermons in the church. He was imprisoned at Stutthof camp and died.  Sts. Peter and Paul Church Vilnius Cathedral of St. Stanislaus and St. Ladislaus of Vilnius ( ilniaus Šv. Stanislovo ir Šv. Vladislovo arkikatedra bazilika) This is the main Catholic cathedral in Lithuania and is a UNESCO World Heritage Site ...

The sender must be a doctor, nurse, or other medical professional because she came to Kyiv to study war medicine. She mentions that they hear missiles and explosions every night and asks that I keep them in my thoughts and prayers.  She did write down what the front says but I am having trouble reading it. 

This is a World Postcard Day card from 2021. It looks like there were six or seven people at this one. He also put a stamp on the front of the card and gave it a special postmark. I don't know if that is from the post office or their own creation. 

This is one of the more interesting card I have received. It is a reproduction of a field service card that Commonwealth soldiers were allowed to send to their loved ones during World War I. It is basically a fill-in-the-blank card where a soldier could circle if they were in hospital or not; that they had received a letter, telegram, or parcel from them; and/or that they have not received anything from their loved ones lately/for a long time. They could sign it only and date the card. A warning on the card reads that sentences written down will be erased or the card destroyed.  I guess the point of the card was to let the soldiers families know that they were alive - no details - just that they were alive.  I am assuming the sender got this card at some sort of museum or event commemorating the First World War.