The document contains descriptions and images of various natural and architectural landmarks around the world, including waterfalls, caves, churches, buildings, and landscapes. Locations mentioned include South America, Thailand, France, Switzerland, Iceland, Greece, Hungary, Germany, Bosnia and Herzegovina, Italy, the United States, the Philippines, Norway, Croatia, the United Arab Emirates, Canada, Costa Rica, Portugal, Spain, and Austria.
17. The Grand Canyon Skywalk is a transparent
horseshoe-shaped cantilever bridge
and tourist attraction in Arizona near the
Colorado River on the edge of a side
canyon in the Grand Canyon West area of the
main canyon. USGS topographic
maps show the elevation at the Skywalk's
location as 4,770 ft (1,450 m) and the
elevation of the Colorado River in the base of
the canyon as 1,160 ft (350 m), and
they show that the height of the precisely
vertical drop directly under the skywalk
is between 500 ft (150 m) and 800 ft (240 m).
Commissioned and owned by the Hualapai
Indian tribe, it was unveiled March 20,
2007, and opened to the general public on
March 28, 2007. It is accessed via the
Grand Canyon West Airport terminal or a 120mile (190 km) drive from Las Vegas ,
which includes a 10-mile (16 km) stretch of
dirt road which is currently under
development. The Skywalk is east of
Meadview and north of Peach Springs with
Kingman being the closest major city.
18. Palawan Underground River
or St. Paul Subterranean
River - Longest Navigable
Underground River in the
World
This is the most famous cave
in the Philippines . The
longest underground river
was discovered a few years
back in Mexico somewhere in
the Yucatan . St. Paul
Underground River in
Palawan , Philippines may not
be the longest underground
river in the world anymore,
but it is still the world's
longest navigable
underground river. The
navigable part of the river
inside the cave of the 4000acre St. Paul Subterranean
River stretches 15 kilometers
in length (5 miles). St. Paul
Cave is deepest cave in the
country .
19. The Seven Sisters (Norwegian: De Syv Søstrene or Dei Sju Systrene, also known
as Knivsflåfossen) is the 39th tallest waterfall in Norway .