Sharing 12 videos about arch

What makes a knight’s armor strong?

Rion NakayaJune 11, 2026

Building a double decker ice block castle from a frozen lake at -47°F

Rion NakayaFebruary 13, 2026

Every rainbow you see is your own personal rainbow. Here’s why…

Rion NakayaJune 10, 2024April 28, 2025

Can origami make good emergency shelters?

Rion NakayaOctober 18, 2021October 18, 2021

How to build a miniature dry stone arch

Rion NakayaOctober 7, 2021March 15, 2022

Llangollen Canal, a 4.5-minute boat tour of the engineering marvel

Rion NakayaMay 19, 2021September 13, 2023

Every Bridge For Every Situation, Explained By an Engineer

Rion NakayaApril 6, 2021August 16, 2023

Fun with Arches, a series of engineering demonstrations

Rion NakayaJuly 2, 2020September 26, 2022

Construct a Roman aqueduct, a DIY engineering activity

Rion NakayaFebruary 18, 2020July 3, 2023

How to make Leonardo da Vinci’s self-supporting bridge

Rion NakayaMarch 20, 2017April 26, 2026

Red PaperBridge, a temporary installation by Steve Messam

Rion NakayaMay 14, 2015August 17, 2023

Block City (1980) by Al Jarnow

Rion NakayaMarch 1, 2013April 17, 2026