Chicago Water Tower

Chicago Water Tower from Hancock Tower

This historical water tower was built in 1869. The second-oldest water tower in the United States. This tower is 55 m tall. One of the few buildings in this area that survived the Great Chicago Fire in 1871.

Page-Ladson prehistory site

Rich find of prehistoric fossils of animals and artifacts left by people 12,500 – 10,500 BC. Here were found bones of animals living at the time when people were already here – elephants, mastodons, mammoths, horses, ground sloths. Chop marks on bones show that people hunted mastodons and other animals.

Large Binocular Telescope

Large Binocular Telescope

One of the most sophisticated optical telescopes in the world with two 8.4 m large mirrors. Constructed in 1996 – 2004.

Hoover Dam

Hoover Dam

Comparatively old and enormous dam for the hydropower station, 221 m high. The structure is adorned with details in Art Deco style and was constructed in 1931 – 1936.

Lehner Mammoth-Kill Site

Lehner Mammoth-Kill Site

In this place, people of Clovis culture killed mammoths around 9,000 BC. There have been found bones of other extinct animals as well.

Mauna Kea Observatory

Observatories on the summit of Mauna Kea, Hawai'i

Group of astronomical research facilities on the summit of Mauna Kea. In total there are 12 telescopes, each into separate buildings, some telescopes belong to the largest in the world. This is a special land use zone, named “Astronomy Precinct” and established in 1967. Summit of Mauna Kea is free of light pollution, there is low humidity and the atmospheric conditions, in general, are stable.

HAARP Research Station, Alaska

HAARP Research Station

Ionospheric research facility – high-power radio frequency transmitter that is able to excite the ionosphere above it. This is a subject of numerous conspiracy theories.

Chand Baori

Chand Baori - stepwell, Rajasthan

One of the most impressive stepwells in India. Built in the 9th century, 13 stories and some 30 meters deep.

Kallanai (Grand Anicut)

Kallanai dam

Ancient, 329 meters long dam on Kaveri River, built around the 2nd century BC and still in use.

Old Mill in Perth

Old Mill, Perth

Historical windmill, built in 1835. Next to it stands another, associated historical structure – Cottage.