In 2005, former Vietnamese refugees who had stayed on Pulau Bidong, a Vietnamese refugee camp off the northeastern coast of Malaysia, returned and erected a simple memorial they called "The Memorial to Boat People". This memorial paid honor the Vietnamese refugee experience and gave thanks to the many organizations and people that helped the Vietnamese refugees. Six months later, the memorial was completely destroyed and discarded. No traces remain except the concrete rubble from the support structure that held the engraved granite pieces in place.
Farnsworth Avenue, Jensen Reserve, Footscray, 3011
The monument commemorates the Australians who helped resettle Vietnamese boat people during the 1970`s, and dedicated to the thousands of refugees who died trying to escape Vietnam. This memorial is the first in Australia to commemorate the plight of the Vietnamese refugees.  
St. Louis, MO
"The Gateway Arch"/"The Gateway to the West" is the US's largest monument. Constructed in 1965, the memorial is commemorating western expansion and the beginning of manifest destiny in the US. Created by Eero Saarinen, "The Gateway" is featured in St. Louis, MO as that is said to be the beginning of western half of the US. 
Roswell Cherokee Memorial (WABE 90.1 FM)Roswell Cherokee Memorial (WABE 90.1 FM)Roswell Cherokee Memorial (Waymarking.com)
575 Riverside Rd, Riverside Park, Roswell, GA 30075
The Roswell Cherokee Memorial is comprised of a series of plaques on rocks along the Chattahoochee River in Roswell, GA. These plaques tell the history of the Cherokee people and the story of their relocation through the Trail of Tears. This memorial is meant to honor the Cherokee who used to live in the area and to remember how they were affected by the Trail of Tears and relocation of Native American groups.
Trail Of Tears MemorialEntrance To MemorialTrail Of Tears Memorial
Jerome, Missouri Heading west on I-44, exit 172 (Jerome). Turn immediately north, then right at the T-intersection at Hwy D toward Jerome. The Trail of Tears Memorial is a few hundred yards on the left.
The Trail of Tears Memorial was built by Larry Baggett to memorialize the plight of the Cherokee Nation’s forced march and relocation from the southeastern United States to Indian Territory in Oklahoma. Most of the concrete work is encrusted with local stone. Mr. Baggett studied Indian culture, astrology and numerology, and told visitors he created the monument to memorialize the plight of Native Americans, to whoms' ghosts he could speak with.
Madonna Of The Trailmadonna of the trail memorial
Springfield, Ohio; Wheeling, WestVirginia; CouncilGrove, Kansas; Lexington, Missouri; Lamar, Colorado; Albuquerque, NewMexico; Springerville, Arizona; Vandalia, Illinois; Richmond, Indiana; Beallsville, Pennsylvania; Upland, California; Bathesda, Maryland
These identical sculptures were placed in the 12 states along the National Old Trails Road. The monuments were commissioned by NSDAR and created by August Leimbach. They are meant to celebrate the spirit of pioneer women in the United States during westward expansion and to provide a symbol of courage and faith.
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Cleveland, Ohio
This is a garden dedicated in 1935, memorializing Czech parents who exemplified "high ideals of American citizenship" and migrants from Bohemia and Moravia to the United States. The garden has a circular layout and has the most statues of all the gardens in the Cleveland Cultural Gardens.