Sender City at Sender One Climbing, is an interactive climbing area for everyone in the family! They’ve worked to create a unique climbing environment built to excite, challenge, and entertain adventurous children and adults alike. Climb buildings, shapes, or race your friends to the top of the walls! With two locations in Orange County and Los Angeles, Sender City is the ideal place to celebrate a birthday or any special occasion while providing a fun, unforgettable experience for all your guests. In addition to Sender City parties, they also have options for parties in the more traditional climbing area. For more information, visit www.sender.one or contact their Groups and Parties Department at (714)752-3452. Orange County: 1441 S. Village Way, Santa Ana. Los Angeles: 11220 Hindry Avenue, Los Angeles.