"Sacred" implies the involvement of a deity. Buddhism has no deity. Therefore no object is sacred in Buddhism.
Buddhism has symbols like the eight spoked wheel, but these are neither real objects or sacred.
Buddhism has relics but these are souvenirs and aides memoires for Buddhists to help them focus in meditation.
the lotus flower
Your own mind.
bananas
Henry Clarke Warren has written: 'A Buddhist Reader' 'Buddhism in translations' -- subject(s): Buddhism, Sacred books, Collected works, Quotations, Buddhist literature, Sacred books (Selections: Extracts, etc.)
India Japan Thailand Sri Lanka and Indonesia Malayasia
A Hindu or Buddhist temple or sacred building, typically a many-tiered tower
Christophe Munier has written: 'Sacred rocks and Buddhist caves in Thailand' -- subject(s): Buddhist Cave temples, Buddhist antiquities, Buddhist shrines, Cave temples, Buddhist, Religious aspects, Religious aspects of Rocks, Religious life and customs, Rocks
in a religious place
The Buddhist use 'sacred texts' or 'scriptures'. But it is nothing like the Bible of Koran (al-Quran, right?). It contains teachings, sayings of the Buddha.
A sacrary is an obsolete term for a sacred building, or a sacrarium, a place in Ancient Rome where sacred objects were kept.
A stupa is a symbol of enlightenment and is one of the most ancient icons of Buddhist art. Stupas are also the oldest and most prevalent forms of Buddhist architecture. More than just being examples of art and architecture, these holy monuments were designed with deep symbolism and sacred geometry. Filled with Buddhist relics, and other holy objects, stupas emanate blessings and peace. A stupa is the most sacred monument found in all of the ancient Buddhist countries. Unique amongst all forms of sacred architecture, it is the quintessential symbol of enlightenment. Stupas are filled with sacred images, mantras and the relics of holy beings. The foundation, symmetry, orientation and contents of the stupa create incredible power to those who even look upon it. It has the potential to transcend the limitations of language to activate enlightened knowledge. "A stupa is a place where all the Buddhas are abiding. Those beings who don't have the karma actually to see Buddha need the holy objects of body, speech and mind - statues, scriptures, stupas - as a field for accumulating merit." - Guhyasamaja Root Text
Buddism actually started from Hinduism only. There is a possibility that Buddist texts may be influenced by Hinduism and their sacred scripts.