Mexico's Cueva de los Cristales (Cave of Crystals) contains some of the world's largest known natural crystals—translucent beams of gypsum as long as 36 feet (11 meters).
Hang Son Doong, Viet Nam The world's largest cave. A 1/5 mile block of 40 story buildings can fit inside. One of the only caves with a jungl
Places & Spaces
In 1900 Cave Library at Dunhuang was discovered after over 1,000 years of being hidden revealing tens of thousands of manuscripts, the world's earliest dated printed book and hundreds of fine paintings on silk, this is the world's earliest and largest paper archive and a treasure trove of medieval art.
The World's Largest Cruise Ship: Allure of the Seas - StumbleUpon
The World's Largest Aquarium // Georgia Aquarium // Atlanta GA
The world's largest solar yacht... One day! ;)