The Temple of T'Panit was a Vulcan sacred site.
The rhythmic "The Chants of the Monks of T'Panit" were one of Tuvok's favorite pieces of Vulcan music. Tuvok owned a holodeck replica of the temple. (VOY: "Riddles")
In 2376, Harry Kim planned a practical joke on Tuvok by altering his holoprogram so that instead of Vulcan prayers, the monks of T'Panit recite Ferengi limericks. (VOY: "Ashes to Ashes")
A short time later, Kim and Tom Paris played another practical joke on Tuvok by dressing the holographic replica of the Oracle of K'Tal in pajamas. (VOY: "Live Fast and Prosper") It is unknown whether the oracle is associated with the Temple of T'Panit.