Bubbles and romance go hand in hand at Schramsberg Vineyards. The second oldest winery in Napa Valley, tastings and tours of the historic caves are by appointment only and are limited to groups of eight. The cave tunnels are dimly lit with numerous well placed candles and can hold up to three million bottles of wine and bubbles. Tastings include generous pours - allow 90 minutes for the tour and tasting. Founded in 1862, the winery is a state historical landmark. The Blanc de Blancs was served for President Nixon's 1972 "Toast to Peace" with China's Premier Zhou Enlai, and has been served at official State functions by every U.S. President since.