Frida Kahlo's childhood home, now a museum of her life and works.

Op-art architecture designed for happiness.

The former private quarters and office of Dr. Sigmund Freud now hosts a museum housing the works of the founding father of psychoanalysis.

Handsomely crafted representations of our round planet.

Museum devoted to the artificial language of Esperanto.

A small museum filled with over 1,000 clocks, and one particular clock calibrated to run until the year 9999.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

A fake Transylvanian castle houses a cathedral of antlers.

In the remote high desert of New Mexico, a strange array of poles beckon fury from above.