The United Nations Educational, Scientific and Cultural Organization (UNESCO) seeks to encourage the identification, protection and preservation of cultural and natural heritage around the world considered to be of outstanding value to humanity.
There are over a thousand UNESCO World Heritage sites. (See map here with photos: http://whc.unesco.org/en/list/)
I have coloured the sites I have visited in blue in the map below. This list links to my geotagged photos of some of them:
The map below shows my geotagged photos from Hampi in November 2017 ('Mouse-over' the camera icons on the map to see the photos, or over the list on the right), which I explored by bicycle and on foot over two days.
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You can explore Hampi through Google Streetview: