Christianity National Cathedral in Washington D.C.- This is the sixth largest cathedral in the world and the second largest in the U.S.
Islamic Dome of the Rock in Jerusalem- The Rock gets its name from the fact that it is built over the highest part of Mount Moriah, which is where Jews and Christians believe Abraham was prepared to offer his son, Isaac, as a sacrifice to God.
Jewish Touro Synagogue in Rhode Island- It is the oldest synagogue still standing in the United States and the oldest surviving Jewish synagogue in North America.
Hindu Angkor Wat in Cambodia- It is the largest religious monument in the world.
Buddhist The Potala in Tibet- It is the highest ancient palace in the world.
All of these sacred places share some sort of design. As some are more detailed and exquisite than others, they all are places where people go to worship. They all look like houses/churches and are tall. Their architectures are different by how they were actually built. For example, the Dome actually looks like a big, alien spaceship and the Touro looks like a house. Some are spread out more than others, too.