来自维基的信息：
The Rostral Columns Saint Petersburg:
Opposite the exchange building on the Neva, de Thomon designed a semicircular overlook with circular ramps descending to a jetty projecting into the river. This formal approach, is framed by two rostral columns centered on the portico of the Stock Exchange. The Doric columns sit on a granite plinth and are constructed of brick coated with a deep terra cotta red stucco and decorated with bronze anchors and four pairs of bronze ship prows (rostra). Seated marble figures decorate the base of each column each representing the major rivers of Russia — the Volga and Dnieper at the northern Rostral Column, Neva and Volkhov at the southern one. The Rostral Columns were originally intended to serve as beacons and originally were topped by a light in the form of a Greek brazier and lit by oil. The braziers have been removed and the tops of the columns refitted with gas torches that continue to be lit on ceremonial occasions.
About the Rostral Columns:
A rostral column is a type of victory column, originating in ancient Greece and Rome where they were erected to commemorate a naval military victory. Traditionally, rostra — the prows or rams of captured ships — were mounted on the columns. Rostral columns of the modern world include the Columbus Memorial at Columbus Circle in New York City, and the paired Saint Petersburg Rostral Columns.
photos © feifei Saint-Petersbourg Russia Feb, 2012。
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