Complex sentence: Unlike the grange and the park, the walled garden was largely unchanged by Capability Brown, but it did receive new hot houses, and in 1766 a stone-curbed pool for which Robert Adam designed a sundial.
Split into simpler sentences: Unlike the grange and the park, the walled garden was largely unchanged by Capability Brown, but it did receive new hot houses. In 1766 a stone-curbed pool for which Robert Adam designed a sundial.