Discovered by cows, these upstate New York show caves are presented with a healthy dose of psychedelic folk art.

These numerous Israeli caves were dug out over hundreds years for reasons ranging from hideouts to burial sites.

Discovered after draining a local pond, these ancient man-made caves are still a complete mystery.

Native Americans built this circle of stones, which was used to predict astronomical events.

The largest earthwork effigy in the world.

A tourist attraction founded around a slumping cabin.

If you are looking for a used Russian battery, Chinese Ham Radio or other electronic oddities this Flea Market is a good place to start.

This attraction was abandoned after the Chernobyl disaster.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

Robots, lasers, and whoopee cushions, oh my!

This cave holds a surprisingly colorful variety of geological oddities.

A theme park attraction designed to turn your children into LARPers.

"World's largest scrap metal sculpture" stands in an outdoor sculpture garden in the middle of Wisconsin.

A mysterious castle built as a monument to lost love.

Iconic pyramid from famed British architect Norman Foster designed to represent all of the world's religious faiths.

1887 era Russian Orthodox church in Minneapolis.

One of the coolest murals in Minneapolis.

An architecturally-focused antique shop.

A nerdcentric group and creators of the Nerd Prom.

A museum within a museum, devoted to history's most questionable medical devices.

World's largest carved onyx figure stands as a tribute to enduring peace.

Enter the Forest of the Elves.

An ancient capital city that dates back 3,000 years old and harbors many surprises.

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