The World’s Longest Echo

Discover Inchindown Oil Tanks in Highland, Scotland: This abandoned oil depot produces world's longest echo in a manmade structure.

Grant’s Canal

Discover Grant's Canal in Delta, Louisiana: The ill-fated plan to reroute the Mississippi so that Union ships could bypass Confederate fortifications on the river bend.

Red Mosque

Discover Jami Ul-Alfar Masjid (Red Mosque) in Colombo, Sri Lanka: This mesmerizing architectural wonder will take your breath away with its unusual color patterns.

AR-MO-OK Tri-State Marker

Discover AR-MO-OK Tri-State Marker in Sulphur Springs, Arkansas: Three markers installed over the course of 140 years mark the point where Arkansas, Missouri, and Oklahoma converge.

Chuck Berry’s House

Discover Chuck Berry's House in St. Louis, Missouri: The red brick house where the father of rock 'n' roll wrote some of his classic hits.

The Giant of Extremadura

Discover The Giant of Extremadura in Madrid, Spain: The lengthy skeleton of one of the tallest Spaniards of all time is on display in Madrid.

Brownie the Town Dog’s Grave

Discover Brownie the Town Dog's Grave in Daytona Beach, Florida: Owned by no one but beloved by all, Brownie was a good dog.

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i
To represent a masterpiece of human creative genius.
261
ii
To exhibit an important interchange of human values, over a span of time or within a cultural area of the world, on developments in architecture or technology, monumental arts, town-planning or landscape design.
480
iii
To bear a unique or at least exceptional testimony to a cultural tradition or to a civilization which is living or which has disappeared.
514
iv
To be an outstanding example of a type of building, architectural or technological ensemble or landscape which illustrates (a) significant stage(s) in human history.
642
ix
To be outstanding examples representing significant on-going ecological and biological processes in the evolution and development of terrestrial, fresh water, coastal and marine ecosystems and communities of plants and animals.
137
v
To be an outstanding example of a traditional human settlement, land-use, or sea-use which is representative of a culture (or cultures), or human interaction with the environment especially when it has become vulnerable under the impact of irreversible change.
172
vi
To be directly or tangibly associated with events or living traditions, with ideas, or with beliefs, with artistic and literary works of outstanding universal significance. (The Committee considers that this criterion should preferably be used in conjunction with other criteria).
256
vii
To contain superlative natural phenomena or areas of exceptional natural beauty and aesthetic importance.
151
viii
To be outstanding examples representing major stages of earth's history, including the record of life, significant on-going geological processes in the development of landforms, or significant geomorphic or physiographic features.
98
x
To contain the most important and significant natural habitats for in-situ conservation of biological diversity, including those containing threatened species of outstanding universal value from the point of view of science or conservation.
168