Can you guess where this stained glass window is?

Log in and leave your guesses below and check back on Monday for the answer.

UPDATE 12/19/11: MusicandMarkets nailed this one. These stained glass windows, in Prague's St. Vitus Cathedral, are the work of the Czech Art Nouveau artist Alphonse Mucha.

Lyndsey Matthews is an assistant digital editor at Travel + Leisure.