A museum devoted entirely to hammers has more than 1,400 items on display dating back to the Romans.

A trading post in the North Pole where children send letters.

Four-story concrete hotel never opened to customers.

Siberian husky that delivered a life-saving antitoxin.

Colorful boxes placed over the dead are left to rot and crumble.

This WWII-era military installation once held an entire city within its walls - now, its walls are falling down.