Millhouse at Philip S. Miller Park

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The Millhouse is a beautiful addition to Philip S. Miller Park and is the perfect space for your next event! This stunning facility boasts a large great room with floor-to-ceiling windows, beautiful high wooden beams, an outdoor fireplace and a spacious patio. The Millhouse provides majestic views of the Amphitheater and rest of the park, and the adjacent pond and waterfalls serve as the perfect backdrop to any special event.

The Millhouse is available for weddings, rehearsal dinners, company picnics and corporate events. We strive to make your event, from weddings to meetings and everything in between, come to life.

  1. Corporate Events
  2. Social Events
  3. Weddings

Located halfway between Denver and Colorado Springs, Castle Rock is the perfect setting for your corporate event or retreat without the long travel. Look into The EDGE: Zipline Tours, which offers corporate retreats, to help create a memorable and unique meeting.


The capacity of the 2,300-square-foot Millhouse is 125 standing and up to 90 seated, depending on layout options. The Millhouse patio can seat an additional 50. Seating options consist of indoor / outdoor furniture including Adirondack chairs, chaise lounge chairs, club chairs and ottomans, side tables, 3-foot cocktail tables, 36-inch round tables and chairs, bar-height tables and stools, training tables and 48-inch indoor round tables.

Facility features

The great room includes a small kitchenette that includes a refrigerator, microwave, double sink and counter tops that can be used for serving food or drinks. Note: it is not a full-service kitchen, and there is no stove available.

There are beautiful barn doors that separate the great room from the atrium and additional seating area. The barn doors can be left open or closed to make your event as private or as open as you like. There are indoor restrooms with access from indoors and outdoors, along with a drinking fountain.

The great room has a projector and projection screen that drops from the ceiling by remote. A projection cart is available. However, the facility renter needs to provide their own laptop.


Rental rates include a guest service representative who will be at your event. They will set up your tables and chairs per your request (linens are not included) and will be on-site throughout your event.

Days of the week
Monday through Thursday$300 per hour
Friday through Sunday$600 per hour

Nonprofit rates are available with nonprofit number provided.

The adjacent Amphitheater can be rented for an additional fee; there are half-day and full day weekday/weekend rates. East of the Millhouse is a grass area that can be used for larger functions that need both the Millhouse and the grass. This area is included in the rental fee. It is a large enough area for a 20 by 20 event tent.


If interested in reserving the Millhouse and/or the Amphitheater, please complete the request form, and we will get back to you with availability.

Note: there are often several large events booked at Philip S. Miller Park. Parking is limited for events and general park/MAC use. Therefore, reservations are staggered to allow for general usage.