For 10 points, name this castle that houses the Crown Jewels of England, and which is where Thomas More and Sir Walter Raleigh were held before their execution.
Early work on this structure was supervised by Bishop Gundulf. Six ravens with clipped wings are kept here to ensure the safety of this building's country. In 1674, two skeletons believed to be those of princes were found in this structure. This building is guarded by yeomen in red and gold uniforms known as the Beefeaters. For 10 points, name this castle that houses the Crown Jewels of England, and which is where Thomas More and Sir Walter Raleigh were held before their execution.
Early work on this structure was supervised by Bishop Gundulf.
{Tower} of {London}