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Join us to ring in 2026 from the Tree House

This Saturday from 4-6pm, bring a batch of cookies to exchange at the Tree House

  Please note: Events are subject to change and are possibly weather dependent.

What a wonderful summer season Mountainside had this past year. As operations transition into the shoulder season, a few important updates at the Tree House are now in effect: Hot Tub: Construction is underway, and the hot tub will remain closed until October 23 for new plaster and tile. Pool Hours: Beginning October 1, pool …

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This Saturday from 4-6pm Poolside at the Treehouse, enjoy specialty drinks while you mingle.

Join local artist Vera this Saturday, the 26th, from 4–6 PM in the Tree House backyard for a creative and eco-friendly art class. Participants will transform recycled CDs and pinecones into unique works of art—all materials provided. Whether you’re crafting or just curious, enjoy complimentary happy hour drinks and a fun, relaxed atmosphere.

This Saturday, 3/22, enjoy Happy Hour at the Tree House from 4:00 pm to 6:00 pm.  Good drinks and great company await!

This Saturday, 2/22 from 4-6 pm Bingo is back!  Bring the whole family and enjoy complimentary beverages while your host Rusty plays groovy music and you compete to win Bingo prizes.

Soap Making Workshop this Saturday 2/1 from 4-6 pm at the Tree House. Enjoy complimentary beverages while learning how to make your own custom soap bar.  

This Saturday at the Tree House, Chinese New Year themed Happy Hour!  Enjoy complimentary Chinese beer and snacks to celebrate the Lunar New Year, and come paint wooden snakes to commemorate the Year of the Snake. Festivities are from 4-6 pm.