Visitors walk through the cemetery of the former Nazi concentration camp in Terezin, Czech Republic, Thursday, January 24, 2019. A unique collection of some 4,500 drawings by children who were interned at the Theresienstadt concentration camp during the Holocaust now displayed in the Pinkas Synagogue, still attracts attention even after 75 years since their creation. The drawings depict the everyday life as well hopes and dreams of returning home. (AP Photo/Petr David Josek)
Visitors walk through the cemetery of the former Nazi concentration camp in Terezin, Czech Republic, Thursday, January 24, 2019. (AP Photo/Petr David Josek)
Visitors take photographs at the former Nazi concentration camp in Terezin, Czech Republic, Thursday, January 24, 2019. (AP Photo/Petr David Josek)
Visitors walk through the cemetery of the former Nazi concentration camp in Terezin, Czech Republic, Thursday, January 24, 2019. (AP Photo/Petr David Josek)
A cat walks through the cemetery of the former Nazi concentration camp in Terezin, Czech Republic, Thursday, January 24, 2019. (AP Photo/Petr David Josek)
Visitor walks at through the former Nazi concentration camp in Terezin, Czech Republic, Thursday, January 24, 2019. (AP Photo/Petr David Josek)
An unnamed monument at the former Nazi concentration camp in Terezin, Czech Republic, Thursday, January 24, 2019. (AP Photo/Petr David Josek)
A visitor looks at the collection of drawings at the Jewish Museum in Prague, Czech Republic, Thursday, January 24, 2019, made by Jewish children who passed through the Terezin Ghetto during WWII. (AP Photo/Petr David Josek)
A visitor looks at the collection of drawings at the Jewish Museum in Prague, Czech Republic, Thursday, January 24, 2019, made by Jewish children who passed through the Terezin Ghetto during WWII. (AP Photo/Petr David Josek)
Visitors look at the collection of drawings at the Jewish Museum in Prague, Czech Republic, Thursday, January 24, 2019, made by Jewish children who passed through the Terezin Ghetto during WWII. (AP Photo/Petr David Josek)
Visitors look at the collection of drawings at the Jewish Museum in Prague, Czech Republic, Thursday, January 24, 2019, made by Jewish children who passed through the Terezin Ghetto during WWII. (AP Photo/Petr David Josek)
A visitor looks at the collection of drawings at the Jewish Museum in Prague, Czech Republic, Thursday, January 24, 2019, made by Jewish children who passed through the Terezin Ghetto during WWII. (AP Photo/Petr David Josek)
Tourists visit the Pinkas synagogue in Prague, Czech Republic, Thursday, January 24, 2019. (AP Photo/Petr David Josek)
The cemetery of the former Nazi concentration camp in Terezin, Czech Republic, Thursday, January 24, 2019. (AP Photo/Petr David Josek)