Bones

Second day and I'm ending up in a tomb already.

Church Saint Peter and Paul in Mělník, located about 30 kilometers north of Prague: Behind an inconspicious, small wooden door secluded from the main gate there are some stairs leading to an underground crypt. And down there, you'll discover the skulls and bones of over 10000 people.

And here's the story behind: When the Plague was spreading rampantly in the late Middle Ages, there wasn't enough space for new bodies on the graveyard surrounding the church. So the gravedigger had to excavate the old ones' remnants - consisting of just bones by now - and bring them to the crypt. In the late 18th century it was sealed off and 100 years passed before someone opened it up again. During World War I a droll fellow named Jindřich Matiegka, university professor in Prague and anthropologist, examined the bones and arranged them in a special new way. Here's the result:

A cross as symbol of faith...

The Latin phrase ECCE MORS, formed of skulls. The english translation would be "Behold death!",
so it's apparently supposed to remind the viewer of the transitoriness of life,
just like MEMENTO MORI.

So remember: That used to be people once.

Notice the holes in those skulls, caused by arrows and axes.

Bones of the sick were examined and stored separately.

The heart.

Some jerk's always around when it comes to scribbling...

And here the opportunity for a donation to the church.
There's an entry fee for the crypt, but its 30 KČ (barely more than 1€) are nicely moderate.

What would I think as a dead if my remnants were used to form a cute heart? I don't know. Or how about something even more fancy like a chandelier for example? Also available in Czechia, namely in Sedlec, located a few kilometers east of Prague. But to be fair, this kind of stuff can be found in other parts of Europe as well.