Sender City | Unique Kids Climbing Experience | Sender One Santa Ana

Welcome to Sender City

We take parties to new heights! Have your next party at Sender City.

Sender City Parties

What is Sender City?

Sender City (formerly known as Funtopia), is an interactive climbing center great for kids and adults of all ages! Climb buildings, towers, shapes or race your friends to the top of the walls. Sender City is located inside Sender One Climbing, one of the biggest and tallest climbing gyms in the country.

Children must weigh at least 35lbs.  All shoes must be close-toed and have non marking soles.


Groups and Parties

We offer various party packages and options to suit every type of event

General Admission

Reservations required to guarantee space.

Sender City Hours

Monday – Sunday: 10am – 6 pm

For Groups and Party Reservations outside of normal hours, email [email protected]

Reservations required to guarantee session


Spider Man

Here’s your chance to be Spiderman! Climb the facade of the building. How about only using the window panes?

Trembling Towers

How high can you climb on the trembling towers? Can you climb the towers with no hands? or your eyes closed?

Drop Slide

The ultimate adrenaline rush — no Sender City visit would be complete without a giant human slide! This is a bonus challenge.

Toddler Park

For small ones under 40lbs! Your little ones are going to love building blocks and learning the ABCs on the traverse wall!

Fun Walls

These are the kids’ favorite walls – climb the building ladders, ascend funtopia letters, or try to balance on spinning gears.

Jump Catch

Challenge your fear of heights on the jump catch tower.  Catch the trapeze bar or punch bag.  How far out can you go? This is a bonus challenge.