Groups

Birthday

Make a Wish, Live the Magic

Celebrate You: A Milestone Birthday Oozing with Style

Experience the unmatched charm of The Palace at Osowa Sien, a private estate nestled in the lush Polish countryside. Perfect for any season, from lively summer bashes to cozy winter celebrations, the castle transforms into your exclusive party oasis.

Celebrate milestone birthdays—whether it’s the big 30, 40, 50, or 80—in grand style. More than just a party, it’s a multi-day extravaganza where every moment is crafted to be unforgettable, making it the event of the year for your guests. At The Palace at Osowa Sien, each celebration feels like welcoming loved ones into your own sumptuous home.

Venue Highlights

Accommodation

The palace accommodates up to 44 overnight guests in uniquely designed suites and rooms, thoughtfully tailored for singles, couples, families, and groups of friends. With beds that can be configured as cozy doubles or comfortable singles, you can choose the configurations best suited to your guests’ unique needs.

Exclusive Use

The palace and its grounds become your private home, offering complete privacy and the freedom to celebrate exactly as you wish. Whether it’s an intimate gathering or a big birthday bash, this is your home base for creating unforgettable memories. 

Venue Spaces

As your milestone birthday approaches, celebrate in style. Sip mimosas in a bathrobe between sauna visits, cozy up by the fire with friends, or stroll through the palace park under centuries-old trees. Relax on the south-side beach or soak up the lively atmosphere indoors.

For the main event, the east wing ballroom—with its adjacent dance floor and bar nook—is perfect for elegant dinners, lively parties, or themed gatherings.

Add a personal touch, like a prosecco trolley in the foyer, where the bold black-and-white terrazzo floor sets the scene for an unforgettable celebration.

Audiovisual Equipment

Take advantage of our Bluetooth-enabled AV equipment, perfect for setting the mood—from ambient background music to a full dance party setup. It’s all included, with the option to rent additional gear or bring your own for the ultimate celebration.

Your Birthday, Your Experience

Turn your birthday into a multi-day celebration at The Palace at Osowa Sien, where you’ll toast with friends in your own castle, dance under a glistening mirror ball, and unwind in a space that feels like home—but better.

Services & Experiences

Cooking & Catering

Craft a birthday celebration tailored to you. Prepare meals together with our Stock-the-Pantry service featuring local, seasonal ingredients, or bring in your own chef. Prefer full-service dining? Choose catering, beverages, and decor from trusted local vendors. For something extraordinary, indulge in farm-to-table cooking or add a unique twist with fun options like a mobile sushi bar or pizza truck.

Birthday Cake:

Sweeten your celebration with a custom birthday cake, croquembouche tower, cupcake pyramid, or more—all crafted by a local baker to bring your vision to life. Vegan? Gluten-free? We’ll connect you with the perfect pastry chef.

Comprehensive Services:

Elevate your celebration with bespoke services like floral arrangements, event planning, wine tastings, and more. Prefer to self-cater or bring in your own vendors? You’re welcome to do so. For added ease, hire a local maid service to tidy common areas each morning while you recharge for another fun-filled day.

https://castlerental.com/storage/sites/15/p3810238.webp

Wellness

Relax in the Finnish sauna, meditate, or rejuvenate with massages and yoga. These wellness experiences enhance your celebration, ensuring you greet your next year refreshed and inspired.

Transportation

Getting here is simple. Fly into POZ or WRO, or arrange a private transfer from Berlin, Warsaw, or another city directly to our doorstep. Local charter buses and taxis are also available to ensure seamless travel for your guests.

A birthday like no other

At The Palace at Osowa Sien, your birthday is more than a party—it’s a reflection of you.

Enjoy a cozy dinner in the castle, toast under the stars, or gather around a bonfire with champagne in hand. Every detail is designed to feel personal and meaningful, set against the backdrop of your own private castle.

Our Offer

Turn your birthday into an unforgettable experience at The Palace at Osowa Sien. Whether it’s an intimate gathering or a multi-day celebration with friends and family, our private castle is exclusively yours to enjoy.

Pricing

  • Midweek (2 nights): Starting from €5,150 + VAT (8%) in low season (e.g., November, March)
  • Weekend (2 nights): Starting from €7,995 + VAT (8%) in season (e.g., spring, summer, early fall)
  • Peak and holiday rates vary. Request a tailored quote for your preferred dates.
  • Extended stays: Special pricing for additional nights

What’s Included?

  • Exclusive use of the castle and its grounds (self-catered)
  • Accommodation for up to 46 guests across 40 beds
  • Essentials provided: Water, heating, linens, towels, Wi-Fi, and parking
  • Arrival: 15:00 | Departure: 11:30

Optional Enhancements:

Personalize your celebration with catering, floral arrangements, event planning, or wellness activities like yoga and massages. Prefer to self-cater? You’re welcome to bring your own vendors.

"I celebrated my 30th birthday at the Palace and couldn't have asked for a more amazing venue. Jamie has been the most incredible person to communicate with - so reliable and helpful for EVERYTHING."

— Sebastian L, Birthday Boy, April 2023

See hundreds of our other 5-star reviews on Google, here.