"the sweltering inhabitants of Charleston and New Orleans, of Madras and Bombay and Calcutta, drink at my well . . . The pure Walden water is mingled with the sacred water of the Ganges."

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

This tiny museum's sizable collection is jammed into a former underground public toilet.

Learn about Iceland's hidden folk at this school dedicated to the study of elves.

An encyclopedic collection of mammal penises.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Siddhartha Gautama sat here and received enlightenment.

A Mysterious Masonic tomb in San Luis Obispo.

Poland's oldest salt mine has nearly everything one needs to live underground forever.

The southernmost outpost of the Russian Empire in colonial America.

Explore the dark underground corridors of this graffiti-covered former military fortification.