31.   Much of the city is built atop the muddy beds of drained lakes.

32.   Now, a flimsy lighthouse built atop rocks on a disputed atoll has tensions at their worst in years.

33.   The compound is built atop the ruins of the two biblical Jewish temples, the holiest site in Judaism, known as the Temple Mount to Jews.

34.   The Chicago-area landfill would be built atop abandoned gravel pits that are now filled with water.

35.   The demonstration was built atop an annual commemoration of Archbishop Oscar Arnulfo Romero, who has been proposed for sainthood by the local Roman Catholic Church.

36.   The contested Jerusalem hilltop is home to two mosques built atop the buried ruins of the biblical Jewish Temples.

37.   The Chicago-area landfill would be built atop abandoned gravel pits that are now filled with water and used by wildfowl.

38.   The forts with their high towers and walls were built atop the mountains to keep out invaders from attacking the city.

39.   The mosques are built atop the ruins of the biblical Jewish Temples and the wall surrounding them winds on to incorporate the Wailing Wall, holy to Jews.

40.   The landfill would be built atop abandoned gravel pits that are now filled with water and used as migratory bird habitat.