Main Sights in Mainz

Roman-Germanic central museum (Römisch-Germanisches Zentralmuseum). It is home to Roman, Medieval, and earlier artifacts.
Antique Maritime Museum (Museum für Antike Schifffahrt). It houses the remains of five Roman boats from the late 4th century, discovered in the 1980s.
Roman remains, including Jupiter's column, Drusus' mausoleum, the ruins of the theatre and the aqueduct.
Mainz Cathedral of St. Martin (Mainzer Dom), over 1,000 years old.
The Iron Tower (Eisenturm, tower at the former iron market), a tower from the 13th century.
The Wood Tower (Holzturm, tower at the former wood market), a tower from the 14th century.
The Gutenberg Museum – exhibits an original Gutenberg Bible amongst many other printed books from the 15th century and later.
The Mainz Old Town – what's left of it, the quarter south of the cathedral survived World War II.
The Electoral Palace (Kurfürstliches Schloss), residence of the prince-elector .
Marktbrunnen, one of the largest Renaissance fountains in Germany.
Domus Universitatis (1615), for centuries the tallest edifice in Mainz.
Christ Church (Christuskirche), built 1898–1903, bombed in ’45 and rebuilt in 1948–1954.
The Church of St. Stephan, with post-war windows by Marc Chagall.
Citadel.
Schönborner Hof (1668).
Rococo churches of St. Augustin (the Augustinerkirche, Mainz) and St. Peter (the Petruskirche, Mainz).
Church of St. Ignatius (1763).
Erthaler Hof (1743).