After a water tower painting was accused of being an ad, a simple fix was made that gave the city a motto.

Mile-long cave system near Great Smoky Mountains.

One of the few surviving "Wigwam"-themed motels.

The world's longest known cave system.

A layered tribute to the work of mosaicist Isaiah Zagar.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

This massive, ancient stone was disassembled and then put back together again.

One of the largest underground systems runs under Canada's largest urban center.

This "Palace of Purification" has made many film appearances as a dark and sinister headquarters.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.