Europe

Padrão
In the 1480s, the Portuguese brought pillars (or padraos) with them in their explorations of western and southwestern Africa and placed them at prominent points, claiming these for Portugal. This is a replica of one of them, from what is now called Cape Cross, in Namibia.

Global Architectural History Teaching Collaborative
Perhaps most interesting and relevant for world history teachers and students are the modules that make connections across space and time.
Analyzing Material Objects
The modules in Methods present case studies that demonstrate how scholars interpret different kinds of historical evidence in world history. This module developed by historian Daniel Waugh explores how historians interpret material objects to better understand the past.

Temple of Vespasian altar
This stone alter found in Pompeii, Italy was part of temple dedicated to the Roman Emperor Vespasian who ruled from 69 to 79 CE. The alter depicts a scene of a bull being led to a religious sacrifice, a common practice in ancient Rome.

Bone comb
Historians and archeologists can learn a great deal from artifacts such as this comb that may date from the Neolithic or Late Stone Age. Items found near the artifact can help provide context such as when the artifact was created and what it might have been used for.

Edsitement
The site contains over 500 lesson plans in a variety of humanities related subjects including history, literature, and art.
Puerto Rico at the Dawn of the Modern Age
This site commemorates the Spanish-American War of 1898 that ended Spanish colonial rule in Puerto Rico, Cuba, and the Philippines, and began U.S. control of these areas.
United States Holocaust Memorial Museum
For teachers and students, the sections dealing with the history of the holocaust, education, research, and contemporary genocides are the most valuable.
British History Online
This site is a digital library containing more than 800 printed primary and secondary sources—including maps, personal journals and diaries, official and political documents, and quantitative evidence—for the history of The British Isles from the 16th to the early 19th Century.