Yestermap

Yestermap is an interactive world map to which anyone can add markers for locations they consider historically significant.

A marker can be anything from an infamous battle to a monument, archaeological survey, place of birth, execution or a record breaking achievement.

Markers are grouped into themed datasets. The scope of such a dataset can range from local history to events that impacted the world on a global scale.
Datasets can easily be shared with others, making them ideal for educational purposes or to be part of a guided tour around local landmarks.

Make your marker more appealing by including text, images and YouTube videos. If you're a premium member you can even create their own virtual tour of historical sites.