The Sedlec Ossuary

More commonly known as the Bone Church is probably the neatest and most unique thing I've ever seen. The cliff's notes version of how it came to be: A 15th century Bohemian king sent his holy man on a holy mission. The holy man brought back sacred soil from Golgotha and sprinkled it on the cemetery near what is now the church. Soon, word of this sacred soil spread and people were dying to get in! The black death and the Hussite wars caused even more death in the region and soon thousands of bodies were buried in the cemetery. Over the years, the original church was destroyed and new one(s) were built. The bones were excavated in this process. Something had to be done with the bones so eventually a famous Italian architect was hired and his creation is what you see here:

This chandelier allegedly has at least one bone from every body that was buried here

The other great thing about visiting the bone church was that it was our first of many train journeys. Successfully negotiating this trip independently greatly empowered us and gave us the needed confidence to continue.

You can read the wikipedia version of the bone church by clicking here.