Source: UNESCO World Heritage
Postcard 1 - Church Fathers Row Mosaic, Saint Sophia Cathedral
Thanks to Alex of Ukraine.
Postcard 2 - Kiev Pechersk Lavra
St. Trinity Gate Church (XII century) and Great Bell Tower (XVIII century), main entrance to the Lavra area, Kiev. Thanks to Michael of Luxembourg who was visiting Kiev, Ukraine.
Postcard 3 - Kiev Saint-Sophia Cathedral
Kiev (Kyiv) National Sanctuary - Sophia Kyivska, Ukraine - Ukraina. Saint Sophia Cathedral symbolized the "new Constantinople" and is listed as a UNESCO World Heritage Site. Thanks Chris for sending me this wonderful card.
Postcard 4 - Kiev Saint-Sophia CathedralThe ancient frescos and mosaics of St. Sophia Cathedral of Ukraine. Thanks so much to Marina for mailing another card - marking my 10th written stamped postcard sent from Ukraine. Another set of nice stamps used.