Flames have been burning within this mountain for more than 2,500 years.

Historic house-museum dedicated to the revolutionary gay graphic artist Tom of Finland.

Space program, pneumatics and more, bits and pieces, for movie sets or the common man.

This forgotten Frank Lloyd Wright house is an architectural marvel at the end of a sleepy residential street.

Hidden above a drug store on a nondescript corner of Lincoln Heights is a private clubhouse for intrepid explorers.

The neighborhood shop is a sort of tiny cactus museum full of exotic specimens you can take home.

This grand mansion has starred in everything from Bones to Buffy.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

A library of rare occult books in Los Angeles.

One man's homage to the sun continues to grow like a glass fractal.

A spiritual retreat in the heart of Los Angeles offers stunning gardens and a labyrinth to lose yourself in.

Abandoned railway line circling the city of Paris.

The oldest continual pilgrimage site in Britain was supposedly created by a gruesome beheading.

These Nubian pyramids are strange and unique, even by pyramid standards.

Ozymandias’ time-keeping temple.

A natural gas leak provides a flickering flame beneath a waterfall.

A toxic ghost town sitting atop a massive coal fire.

An abandoned saucer-shaped monument in the Bulgarian mountains.

A city built from mud and known as the "Manhattan of the desert."

The rocks in this arid basin leave trails of movement behind them.

The convergence of two currents makes this a surprisingly pleasant getaway in the Arctic Circle.

"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."

A tidal bore with its own festival.

A huge musical instrument played by the ocean.