Mythallar

Finally, Luna and Allen arrived before the door to the room that had always been locked.

"The door to this room is locked. No spell or object that can break it open can open it," Allen said. "According to Dumbledore, there's a power inside more wondrous and more terrible than death, than human wisdom, than the forces of nature. He believes this may also be the most mysterious of the many subjects that need studying in the Department of Mysteries. By his account, Harry Potter possesses all the energy in that room, while Voldemort has none at all—is he hinting that this is the power of love?"

Luna's hand touched the lock. Blue streams of light flickered across the door, and with a gentle push from Luna, it opened.

A fountain immediately came into Allen's view. Water with a mother-of-pearl sheen bubbled and gushed endlessly, and spiraling steam wreathed the fountain. He seemed to smell the inky scent of library books and a trace of decay, Luna's fresh body fragrance mingled with the sweet scent of lilacs, and also that feeling of magical energy gathering... (Author's note: On the wiki, this locked room is called the Love Room. It's said that J.K. Rowling said in an interview that there is an Amortentia Fountain inside.)

"The Amortentia Fountain. What do you smell?" Allen judged with certainty. He was a little curious what Luna could smell, and whether his scent was among it.

"Of course there's your scent." Luna also sniffed hard, then explained, "The door I sealed with divine power can't be opened with ordinary magic. This Amortentia Fountain can make the wizards outside think that what's in this room is the power of love."

"Explaining it as the energy of love isn't actually wrong in a certain sense. This room