The First District (Innere Stadt) — Vienna's historic core and UNESCO World Heritage listed — is where the honeymoon story in Vienna begins and largely stays. Within this dense, walkable neighborhood lies the Stephansdom (St. Stephen's Cathedral, whose Romanesque and Gothic spires have dominated Vienna's skyline since 1137), the Hofburg Imperial Palace complex, the Spanish Riding School, the Wiener Philharmoniker's concert hall (Musikverein), and dozens of coffee houses that have been operating continuously since the 17th century. The density of culture available on foot from a First District hotel is unmatched in any comparable urban area.
Vienna's coffee house culture is not background but foreground for a honeymoon here. Café Central (in the Palais Ferstel, a neo-Gothic banking palace), Café Schwarzenberg on the Ringstrasse, Café Landtmann (where Freud and Mahler were regulars), and the jewel-like interior of Demel on the Kohlmarkt constitute an institution — UNESCO-recognized as Intangible Cultural Heritage — where the ritual of sitting over a Melange (half coffee, half steamed milk) and a Sachertorte or Apfelstrudel for two hours, reading or watching Vienna walk past, is one of the genuine pleasures of European travel.
The Ringstrasse — the 5.3km ring of monumental buildings completed between 1865 and 1900 — deserves an evening walk regardless of weather. The Staatsoper (Vienna State Opera), lit from within and with the bustle of pre-performance audience arriving by taxi and on foot, is particularly atmospheric on performance evenings. Standing-room tickets to the Staatsoper cost €4–8 and provide access to one of the world's greatest opera companies in its home building — the most culturally specific and affordable evening activity available in Vienna.
Schönbrunn Palace, the Habsburg summer residence on the western edge of the city, is where honeymooners should spend half a day. The 1,441-room Baroque palace's state rooms and the Gloriette — a colonnaded arcade on the hill behind the palace with a panoramic view over the city — are the essential imperial experience. The Tiergarten (zoo) in the palace grounds, founded in 1752, is the world's oldest zoo and still occupying its original Baroque pavilion buildings. The palace gardens at the golden hour, when the hedges cast long shadows and the fountain lights come on, are the ideal end to an afternoon here.
Vienna's culinary scene has evolved beyond its historical café culture into a seriously compelling restaurant destination. Steirereck im Stadtpark (two Michelin stars, one of the 50 best restaurants in the world, overlooking the Stadtpark canal) is the apex — a lunch here is among the finest possible restaurant experiences in Europe. The Naschmarkt, Vienna's daily open market between the Linke and Rechte Wienzeile, is where the city shops for Styrian pumpkin oil, Burgenland wine, Syrian truffles, and the finest Viennese Würstl — an essential morning or lunch visit for food-oriented honeymooners.