This plaza at the end of the world teems with monumental tributes to a problematic history, and laser discs.

This stunning mass of ice spans 121 square miles and is still growing.

A bright little alley in La Boca is a part of tango history.

105-foot wide giant metallic flower blooms anew every day in the heart of Buenos Aires.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

This historic, palatial theater is now one of the world’s most beautiful bookstores.

Central America's deepest lake is actually a volcanic caldera, surrounded by three volcanoes.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Every equinox this Maya pyramid puts on a spooky ancient light show.

Cathedral carved out of salt, located a mile below the earth's surface.

This "floating island" plateau sits 7,671 feet above the forest floor.

The Canaima airstrip in Venezuela keeps an antique DC 3 plane in its camp.

The world's tallest slum.

This former shopping center now acts as the eccentric lair of the Venezuelan secret police and their shadow prison.

12,000 sq. ft. museum tracing erotic art from antiquity to modern times.

Electrical pylon in the shape of Disney's beloved mouse.

A vast array of tropical plants collected by a vacationing couple.

The highest point in the state of New Hampshire, and while unlikely "the worst weather in the world," it sure seems that way to hikers.

Hill-like structures formed by glaciers and sandy spits of land.

Solar powered Spectacle Island features all-green facilities.

The world's largest piece of copyrighted artwork.

Impossibly life-like natural history models created out of glass by a father and son.

Three prestigious academic collections come together to create a world-class natural history museum.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.