Hundreds of wooden coffins dangle from cliffs and caves in the Philippines.

Rebuilt remains of a temple to Roman god Mithras.

A church of bones, decorated with 40,000 human skeletons.

The mortal remains of an estimated 70,000 people lie in the basement of a monastery in Lima, Peru.

An underwater city for the dead.

View rare birds and interact with lemurs at this nonprofit run entirely by volunteers.

The ruins of a creative scholar's fantastical unfinished sanctuary act as his massive gravestone.

Medical museum featuring a number of excellent medical models.

This roadside attraction in the woods of Mississippi is a scalable replica of the Holy Lands during biblical times.

The ruined remains of a coal mining ghost town are hidden within the woods.

The universally beloved children's television figure is interred on a high hilltop in one of western Pennsylvania's oldest cemeteries.

Mutant vegetables, transgenic mosquitos, and atomic rodents span the walls of this one-of-a-kind museum.

The residents of the Neighborhood of Make-Believe live without much fanfare within the Pittsburgh Children's Museum.

It may appear to be a fancy junk yard, but each item has a story to tell and a lesson to impart.

Beautiful waterfalls grace a canyon visibly torn by a violent tornado.

Mile-long cave system near Great Smoky Mountains.

Crumbling ruins mark the site of a couple's grisly murder in the woods.

This natural wonder drops 16 stories straight down through rare flora and streaming waterfalls.

More than five miles of underground passageways.

This park contains one of the largest concentrations of cedar glades, a unique and rare ecosystem.

A wild trout fishery in Arkansas.

Fantastic collection celebrating the final send-off.

Roadside attraction with more than 1,000 stuffed and mounted animal skins displayed in simulated natural habitats with hand-painted backdrops.

This small condiment museum makes all manner of mustards with a 200-year-old mill.