Mitchelstown Caves, Ireland
Mitchelstown Cave is considered one of the most spectacular caves in Europe. A guided tour takes you through nearly 1/2 mile of caves. There are three massive caverns, in which you are surrounded by indescribable drip stone formations, stalactites, stalagmites and huge calcite columns. The caves are not lit by colored lighting which allows you to see the natural beauty of the cave without Disneyland-like enhancements. Oh yeah, no photographs are allowed inside and be prepared to sing...
Address: Mitchelstown Cave off the N8 in Tipperary