World Peace Wall Art

Picture is courtesy of "otzberg" who published it on Flickr and wrote in the caption:

Palistinian Flag, A German Flag and the Magen David,...Next to a flag reads (rough translation): This flag was created based on the humanistic thought of peace and unitiy between all peoples (countries). It is the inheritance to all German post-WWII generations...

Triumphant Stars of David

Triumphant Magen Davids on top of the 1887 Moorish-style Eldridge Street Synagogue, which was the first Synagogue built on the Lower East Side, New York City, by Eastern European Jews. It was designated a National Historic Landmark in 1996.
Picture is courtesy of "MGChan" who published it on Flickr.

Brick Hexagrams

Ornamented brick Hexagrams and crosses on the building of the Catholic University of Leuven, Belgium, which was founded in 1425. It is the oldest of all the catholic universities in the world.
Picture is courtesty of "maxg" who published it on Flickr.