Category:Art Nouveau architecture by substyle
- Western architectural styles
- Pre-Romanesque
- Romanesque
- Gothic
- Renaissance
- Mannerist
- Baroque
- Rococo
- Neoclassical
- Historicist
- Gothic Revival
- Romanesque Revival
- Neo-Renaissance
- Art Nouveau
- Modernist
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Subcategories
This category has only the following subcategory.