Incorporate decorative archways with climbing roses into a Japanese Zen garden for a serene and peaceful atmosphere. Choose archways made of bamboo or natural wood to create a traditional Japanese aesthetic. Plant climbing roses with delicate and pastel-colored blooms to complement the Zen garden's calming color palette. Surround the archways with moss, rocks, and gravel to create a minimalist and tranquil landscape. This combination of decorative archways and climbing roses will bring a sense of harmony and tranquility to your garden.