Skip to Main Content

Anti-Gravity House.

Wonder World: Anti-Gravity House

Field review by the editors.

San Marcos, Texas

This theme park found success with a quadruple threat roadside attraction: a natural cave, a gravity shack, an observation tower, and a train-like tram ride through an animal petting park. We first visited in the mid-1980s, and again in 2015 to observe that it offered essentially the same apparently timeless thrills.

The natural dry cave portion first opened to the public as an attraction in 1903, and a subsequent owner, A.B. Rodgers, named it Wonder Cave in 1916. The business was eventually bought by a local family in 1958 who continue its operation. Wonder Cave became Wonder World Adventure Park. For a long period it dwelled in the entertainment shadow of San Marcos' mega-attraction Aquarena Springs (featuring a Mermaid Spring and Ralph the Diving Pig). But Aquarena closed in 1996.

Photo op.

Wonder World Park's Anti-Gravity House offers the disorienting effects we've come to expect from any decent Mystery Spot. The rooms are skewed and tilted, and various props allow visitors to test the phenomena themselves. The design is more like a funhouse (with distorting mirrors and striped wallpaper) rather than a rustic mountain shack in the grip of gravity.

Wonder World Park has an extensive gift shop. We bought a foam 40-gallon cowboy hat.

Wonder World: Anti-Gravity House

Wonder World Cave and Adventure Park

1000 Prospect St., San Marcos, TX
Wonder World Cave and Adventure Park. Southwest side of town. I-35 exit 202. Northwest on Wonder World Drive, right on Hopkins St., left on Bishop St., right on Prospect St.
Daily 10-5, Sa 10-6 (Call to verify) Local health policies may affect hours and access.
Adults $32 combo ticket.
Save to My Sights

Nearby Offbeat Places

Sculpture at World's Only MLK-LBJ IntersectionSculpture at World's Only MLK-LBJ Intersection, San Marcos, TX - 1 mi.
LBJ MuseumLBJ Museum, San Marcos, TX - 1 mi.
Mermaid MuralMermaid Mural, San Marcos, TX - 1 mi.
In the region:
Car Hops, Burgers, Dazed and Confused, Austin, TX - 35 mi.

More Quirky Attractions in Texas

Stories, reports and tips on tourist attractions and odd sights in Texas.

Explore Thousands of Unique Roadside Landmarks!

Strange and amusing destinations in the US and Canada are our specialty. Start here.
Use's Attraction Maps to plan your next road trip.

My Sights

My Sights on Roadside America

Save Cool Vacation Destinations! ...Try My Sights

Mobile Apps

Roadside America app: iPhone, iPad Roadside America app for iPhone, iPad. On-route maps, 1,000s of photos, special research targets! ...More

Roadside Presidents app: iPhone, iPad Roadside Presidents app for iPhone, iPad. POTUS landmarks, oddities. ...More

Texas Latest Tips and Stories

Latest Visitor Tips

Sight of the Week

Sight of the Week

National Ballpark Museum, Denver, Colorado (Jul 15-21, 2024)

SotW Archive

USA and Canada Tips and Stories

More Sightings