--- product_id: 638914563 title: "National Geographic Jumbo Cardboard Building Blocks – 30-Pc. Extra-Thick Cardboard Bricks for Kids, Build a Castle Play House, Indoor Playhouse, Large Building Blocks, Kids Giant Blocks" brand: "blue marble" price: "€ 143.00" currency: EUR in_stock: true category: "Blue Marble" url: https://www.desertcart.gr/products/638914563-national-geographic-jumbo-cardboard-building-blocks-30-pc-extra-thick store_origin: GR region: Greece --- # includes educational learning guide 30-piece jumbo castle set extra-thick durable cardboard National Geographic Jumbo Cardboard Building Blocks – 30-Pc. Extra-Thick Cardboard Bricks for Kids, Build a Castle Play House, Indoor Playhouse, Large Building Blocks, Kids Giant Blocks **Brand:** blue marble **Price:** € 143.00 **Availability:** ✅ In Stock ## Summary > 🏰 Unlock epic creativity with every giant block! ## Quick Answers - **What is this?** National Geographic Jumbo Cardboard Building Blocks – 30-Pc. Extra-Thick Cardboard Bricks for Kids, Build a Castle Play House, Indoor Playhouse, Large Building Blocks, Kids Giant Blocks by blue marble - **How much does it cost?** € 143.00 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/638914563-national-geographic-jumbo-cardboard-building-blocks-30-pc-extra-thick) ## Best For - blue marble enthusiasts ## Why This Product - Trusted blue marble brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Complete Royal Kit:** includes drawbridge and two crowns for immersive role-play - • **Educational Playtime:** comes with a full-color guide to spark curiosity about castles - • **Award-Winning Quality:** from Blue Marble, Toy of the Year winner trusted by parents - • **Build Your Dream Castle:** 30 oversized, interlocking blocks let creativity reign supreme - • **Durable & Kid-Safe Design:** extra-thick cardboard ensures frustration-free, sturdy play ## Overview The National Geographic Jumbo Cardboard Building Blocks set features 30 extra-thick, durable cardboard pieces designed for kids aged 3 and up. This castle-themed kit includes detailed graphics, a drawbridge, two crowns, and a full-color learning guide, combining imaginative play with educational value. Lightweight yet sturdy, these interlocking blocks foster cognitive development, hand-eye coordination, and creative thinking, all backed by Blue Marble’s award-winning quality. ## Description Buy National Geographic Jumbo Cardboard Building Blocks – 30-Pc. Extra-Thick Cardboard Bricks for Kids, Build a Castle Play House, Indoor Playhouse, Large Building Blocks, Kids Giant Blocks: Building Sets - desertcart.com ✓ FREE DELIVERY possible on eligible purchases ## Features - BUILD YOUR OWN CASTLE - The jumbo building blocks in this kit sport a castle theme, so kids can build their very own castle play house! Kids can let their creativity shine as they create unique, custom castles with ease! - SAFE, SECURE, AND DURABLE - These blocks are designed to hold together securely when assembled, eliminating frustration! Made from durable cardboard, they're also safe, lightweight, and durable so kids can explore any design they can think of! - ENDLESS BUILDING POSSIBILITIES - These high-quality building blocks are a great way for kids to explore their creativity as they design and build their very own castle play house! They'll also learn about castles with the included Learning Guide! - EVERYTHING INCLUDED - Kids can build the ultimate castle playhouse with the components in this kit! In addition to 27 blocks in different shapes and sizes, they'll get a drawbridge and two crowns to faithfully lead their new kingdom! - AWARD-WINNING PRODUCTS - Blue Marble, winner of the Toy Association's prestigious Toy of the Year Award, proudly develops products that foster education, imagination, and creativity, with a U.S. support team to ensure a stellar experience! ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CY3DXW6V | | Additional Features | Detailed Castle Graphics, Easy to Assemble, Extra-Thick, Durable Block Pieces, Multiple Shapes & Sizes | | Age Range Description | 3 years and up | | Best Sellers Rank | #20,277 in Toys & Games ( See Top 100 in Toys & Games ) #1,854 in Toy Building Sets | | Brand Name | Blue Marble | | Color | Blue | | Customer Reviews | 4.8 4.8 out of 5 stars (330) | | Educational Objective | Cognitive Development, Construction Skills, Creative Thinking, Hand-Eye Coordination, Stacking Skills | | Included Components | 2 crowns, 27 jumbo building blocks for kids, Drawbridge, Full Color Learning Guide | | Is Assembly Required | No | | Item Type Name | 30 Jumbo Cardboard Castle Building Blocks | | Item Weight | 6.3 Pounds | | Manufacturer | JMW Sales, Inc. | | Manufacturer Maximum Age (MONTHS) | 99.0 | | Manufacturer Minimum Age (MONTHS) | 36.0 | | Manufacturer Part Number | NGCASTLE30 | | Material Type | Cardboard | | Model Name | 30 Cardboard Castle Building Blocks | | Model Number | NGCASTLE30 | | Number of Pieces | 30 | | Operation Mode | Manual | | Size | Large | | Subject Character | Castles | | Theme | Castle | | Toy Building Block Type | Interlocking Toy Building Block | | UPC | 810070623708 | ## Product Details - **Brand:** Blue Marble - **Age Range (Description):** 3 years and up - **Color:** Blue - **Theme:** Castles - **Cartoon Character:** Castles ## Images ![National Geographic Jumbo Cardboard Building Blocks – 30-Pc. Extra-Thick Cardboard Bricks for Kids, Build a Castle Play House, Indoor Playhouse, Large Building Blocks, Kids Giant Blocks - Image 1](https://m.media-amazon.com/images/I/91Hw8SsYVqL.jpg) ## Available Options This product comes in different **Style** options. ## Frequently Bought Together - National Geographic Jumbo Cardboard Building Blocks – 30-Pc. Extra-Thick Cardboard Bricks for Kids, Build a Castle Play House, Indoor Playhouse, Large Building Blocks for Kids, Kids Giant Blocks - NATIONAL GEOGRAPHIC Clay Dinosaur Arts & Crafts Kit - Dinosaur Air Dry Clay for Kids with 5 Clay Colors, 5 Dino Skeletons & Googly Eyes, Dinosaur Activity for Girls and Boys Ages 4 5 6 7 8 9 & 10 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.gr/products/638914563-national-geographic-jumbo-cardboard-building-blocks-30-pc-extra-thick](https://www.desertcart.gr/products/638914563-national-geographic-jumbo-cardboard-building-blocks-30-pc-extra-thick) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-07-29*