6 Best Sights in The Pfalz and Rhine Terrace, Germany

This cathedral's interior is a virtual sculpture gallery of elaborate monuments and tombstones of archbishops, bishops, and canons, many of which are significant artworks in their own right. Emperor Otto II began building the oldest of the Rhineland's trio of grand Romanesque cathedrals in 975, the year in which he named Willigis archbishop and chancellor of the empire. Henry II, the last Saxon emperor of the Holy Roman Empire, was crowned here in 1002, as was his successor, Konrad II, the first Salian emperor, in 1024. In 1009, on the very day of its consecration, the cathedral burned to the ground. It was the first of seven fires the Dom has endured. Today's cathedral dates mostly from the 11th to 13th century. During the Gothic period, remodeling diluted the Romanesque identity of the original; an imposing baroque spire was added in the 18th century. Nevertheless, the building remains essentially Romanesque, and its floor plan demonstrates a clear link to the cathedrals in Speyer and Worms. Individual and group tours can be arranged through the Tourist Service Center.

The Kaiserdom, one of the finest Romanesque cathedrals in the world and a UNESCO World Heritage site, conveys the pomp and majesty of the early Holy Roman emperors. It was built between 1030 and 1061 by the emperors Konrad II, Henry III, and Henry IV. The last replaced the flat ceiling with groin vaults in the late 11th century, an innovative feat in its day. A restoration program in the 1950s returned the building to almost exactly its original condition. The four towers symbolize the four seasons and the idea that the power of the empire extends in all four directions. Look up as you enter the nearly 100-foot-high portal; it's richly carved with mythical creatures. In contrast to Gothic cathedrals, whose walls are supported externally by flying buttresses, allowing for a minimum of masonry and a maximum of light, at Speyer the columns supporting the roof are massive. You can climb the 304 steps of the southwest tower (access Apr.–Oct.) to reach the viewing platform, from where there is a splendid panorama. Another highlight is the Krypta which lies beneath the chancel. It's the largest crypt in Germany and is strikingly beautiful in its simplicity. Four emperors, four kings, and three empresses are buried here.

It's just a short walk up Gaustrasse from Schillerplatz to the church, which affords a hilltop view of the city. Nearly 200,000 people make the trip each year to see the nine magnificent blue stained-glass windows designed by the Russian-born artist Marc Chagall.

In contrast to Speyer's Romanesque cathedral, the Worms Cathedral of St. Peter is much more Gothic. In part this is simply a matter of chronology, since Speyer Cathedral was finished in 1061, nearly 70 years before the one in Worms was even begun—and long before the lighter, more vertical lines of the Gothic style evolved. In addition, Speyer Cathedral was left largely untouched, but the Worms Cathedral underwent frequent remodeling. The Gothic influence here can be seen both inside and out, from the elaborate tympanum with biblical scenes over the southern portal (today's entrance) to the great rose window in the west choir and the five sculptures in the north aisle recounting the life of Christ. The cathedral was gutted by fire in 1689 in the War of the Palatinate Succession. For this reason, many of the furnishings are baroque, including the magnificent gilt high altar from 1742, designed by the master architect Balthasar Neumann (1687–1753). The choir stalls are no less decorative. They were built between 1755 and 1759 in rococo style. Walk around the building to see the artistic detail of the exterior.

A Gothic gem inside and out, this is the only 15th-century church in the Palatinate region whose walls have been entirely preserved, though the interior has changed according to the style of the times. Despite having been looted during the French Revolution and turned first into a wine warehouse and later a military prison, the basic exterior structure of the church hasn't been altered. The interior includes stained glass that dates from the Middle Ages and wooden figures from around 1500.

On the way to Oppenheim, the vine-covered hills parallel to the Rhine gradually steepen. Then, unexpectedly, the spires of Oppenheim's Gothic St. Catherine's Church come into view. The contrast of its pink sandstone facade against a bright blue sky is striking. Built between 1225 and 1439, it's the most important Gothic church between Strasbourg and Cologne. The interior affords a rare opportunity to admire magnificent original 14th-century stained-glass windows including two rose windows, the Lily Window and the Oppenheim Rose. The church houses masterfully carved tombstones, and the chapel behind it has a Beinhaus (charnel house) containing the bones of 20,000 citizens and soldiers from the 15th to 18th century.