Baptisterium
In-game article clicks load inline without leaving the challenge.

In classical antiquity, a baptisterium (Ancient Greek:βαπτιστήριον) was a large basin installed in private or public baths into which bathers could plunge, or even swim about. It is more commonly called natatorium or piscina.
- This article incorporates text from a publication now in thepublic domain:Peck, Harry Thurston, ed. (1898). "Baptisterium". Harpers Dictionary of Classical Antiquities. New York: Harper & Brothers.