Friendship Center is one of Twin Rocks' most popular facilities. Its fireplaces, carpeting, soft couches, and padded chairs provide a comfortable place to gather, and its location adjacent to the Dining Center offers convenience.  Upper Friendship Center provides a meeting room for up to 100 people, which includes a podium, grand piano, overhead projector, screen, CD player, 19 inch TV-VCR/DVD, and public address system (four microphone/auxillary inputs). A video projector can be made available upon request.

Lower Friendship Center provides a small meeting room, comfortable couches, and access to office equipment such as a photocopy machine and Internet-enabled computer. Wireless Internet is available in both Lower and Upper Friendship Center.

Aquarium. A salt water aquarium also sits in Lower Friendship Center, providing a close-up view of anemones, sea stars, and dozens of other creatures common to the Pacific Coast of Oregon. Guided "tours" of the aquarium can be made available for groups or individuals, upon request.

Upon occasion, Friendship Center is utilized as an overflow dining room when the Dining Center reaches capacity.

Camp Office. The Twin Rocks "Guest Services" office is located in Lower Friendship Center to assist campers who have needs or questions.