These egg-shaped buildings constructed by Jesuits house a quaint museum in the Andes.

Mineral springs believed to hold therapeutic properties draw in visitors from all over.

Visit this odd display of indigenous style in Argentine wine country.

A Swiss man built this airstrip for aliens because a UFO captain telepathically told him to.

A series of waterfalls so massive they straddle the border of Argentina and Brazil.

An underexplored, 130-foot tropical waterfall that you will have all to yourself.

As one of the world's largest hydroelectric dams this plant took two countries to get built.

The fighters and conspirators that won independence for Paraguay held secret meetings at this historic house.

In the middle of a sleepy Paraguayan village, a more than 20-meter-tall medieval castle protrudes into the air.

These spectacular ruins were built by Spanish padres in the 17th century.

Of the many Jesuit missions in South America, this complex is one of the best preserved.

This attraction is devoted to the wonders of steam power and features a replica of one of its most public disasters.