When it comes to designing artificial climbing walls, it's possible to go wild. From turning grain silos into ice walls to sticking holds up the face of a dam in Switzerland, the walls below are definitely some of the most unique climbing walls you will find.
1. The mighty Excalibur

What: Excalibur
Where, Netherlands
What’s special: A climbing tower that's 37m high with 11m overhang. There's even a competition going at the moment.
2. Climb a dam

What: a huge dam
Where: Swizerland
What’s speical: The 165m dam has been turned into a climbing wall. Climbers need to use a ladder to get up the first 6m, but after making it to the top they can catch spectacular views of the Alps.
3. Ice climibng indoors

What: indoor ice wall
Where: Scotland
What’s special: Climbers can practice their technique indoors all year round on this 12m high wall. It's the biggest indoor ice wall in the world, and what's more it's based off the famous West Highland Way trekking route.
4. The colorful climb

What: colorful climbing walls
Where: Newzealand
What’s special: Climbzone is perfect for kids – it's a riot of colour. The complex has walls for adults too though!
5. Climb inside a grain silo

What: grain silo climbing
Where: US
What’s special: Have a unique climb inside 20m high grain silos. There're three round silos, and two interestingly shaped ones that allow chimney climbs.
6. Thank god for climbing

What: climbing inside a remodeled cathedral
Where: UK
What’s special: Nestled into a former Victorian cathedral, these walls really do soar to the sky. And they're bathed in the lovely multi-colored light from the stained glass, too.