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

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

Thomas Jefferson's estate is home to hundreds of varieties of historic fruits and vegetables.

This old steel industry company town has a tradition of parking cars on the sidewalk so people can walk in the narrow streets.

An oddity shop inspired by the history of the circus.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

A jaw-dropping brutalist space church seems to have crash-landed in the middle of America.

A mysterious castle built as a monument to lost love.

Found: Garden of Eden in Miami-Dade County, Florida.

This beautiful Miami garden was designed as a laboratory for tropical plants.

12,000 sq. ft. museum tracing erotic art from antiquity to modern times.

An underwater city for the dead.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

St Bernard de Clairvaux Episcopal Church, better known as one of the oldest European buildings in the Western Hemisphere.

A giant granite cross remembers missionary Father Frederic Baraga, and his safe passage across an angry Lake Superior.

This picturesque cliffside beacon no longer calls to sailors but shines once a year in honor of a famous shipwreck.

Half of a waterfall goes into the river while the other half seems to disappear.

The scuba diving training facility was named for the steam that rises from the cave's chimney.

An abandoned vacation home spent a decade taking on legends. It's now taking on water.

This striking art museum holds an amazing series of curiosity cabinets.

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

Legs Inn provides Polish food, a cornucopia of Native American artwork, wood carvings, and mounted deer heads.

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.