A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

A hyper-luxurious, 12,000- square foot home might be buried beneath Queens, still waiting to protect you from nuclear missiles.

The only intersection in America where the buildings on all four corners were built pre-Revolutionary War.

A small medical museum with a recreated doctor's office.

The end of the 4 Line is also the end of the line for 300,000 souls in one of NYC's most illustrious cemeteries.

This house was largely built out of hundreds of thousands of discarded glass embalming fluid bottles.

This innocent-looking townhome is actually a subway exit.

This extremely narrow tenement boasts a maximum occupancy of just two.

Yale University's home for rare works, including the mysterious Voynich Manuscript.