Cathédrale Notre Dame de Strasbourg
Once the world's tallest building (until 1874), this Catholic cathedral is a marvel of Gothic architecture. It is now the sixth-tallest church on the planet, and can be seen across a wide swath of Alsace.
A former home to bishops and cardinals of the House of Rohan, today's Palais Rohan is both a museum complex and a superlative example of French Baroque architecture.
Strasbourg Museum of Modern and Contemporary Art
One of the grandest museums in all of France, Strasbourg Museum of Modern and Contemporary Art features over 18,000 pieces. The impressive museum cafe, located on the roof terrace, is highly recommended.