Some buildings are demolished quietly. Some are left, their bones from decades past still left as remnants for the next generation. Some are wiped away by wars, and with those come fire and destruction.

It could be seen as the erasure of history if it weren't for those who chose to photograph these magnificent feats of architecture. These buildings and their memory can never be erased.

This collection offers a look back in time at 25 lost buildings. Some may be in ruins and now lie dormant underground. Others have been reconstructed and morphed into a new building entirely. Some even bear the same name, though unrecognizable from their past forms.

These buildings offer a historical look at the architectural tastes that varied with time and region. These monuments were constructed by hand. See if you can guess which century some of these are from. Try to imagine what it would be like to enter those hollowed halls and hear the musical sounds of people living.

Here are 25 buildings and monuments that are lost to time, but not lost to history.