築山

1. Origins, structure, and basic meaning

• Structure: 築山 (つきやま) is an artificial hill or garden mound.
• Basic usage: 築山を造る makes the mound a constructed feature; 築山の上から眺める uses its top as a viewpoint.

2. Common pitfalls and similar expressions

• Constructed feature and garden viewpoint
  • The first phrase treats it as what is built, while の上から treats the completed mound as an elevated viewing position.