Great Wall of China

The Great Wall of China is one of those undeniable bucket list sites that have long inspired great adventures.

This massive wall, connecting battlements and watchtowers, was built over the centuries, with the oldest sections dating back to the 7th century BC.

You can opt to simply visit the wall on a day trip from places like Beijing, or tackle whole sections of it on organized, multi-day trips. Some sections of the wall have been restored, while other sections are badly in need of repair.