Meridian Bank Tower, Office building in downtown Phoenix, United States.

The Grand Central Tower, originally the Guaranty Bank Building, is an International Style office high-rise at 3550 North Central Avenue in Phoenix. Its north and south faces are divided into five sections by six vertical columns of precast concrete cladding, with translucent blue glass between light blue panels; the east and west sides have five extruding concrete columns framing recessed sections, the outer ones clad in windowless Mo-Sai stone. A 20-by-20-foot sign sits on the north and south sides.

Originally planned as an 11-story building called the 3550 Building, it was approved in January 1959 and ground was broken on February 13, 1959, for developer David H. Murdock. Topped out in December 1959 and completed in 1960, it took the title of Phoenix's tallest building from the Westward Ho (1929) and held it until the 26-story Phoenix Corporate Center opened in 1965. Its exterior was remodeled in 1988.

The tower's name has changed with its owners: it opened as the Guaranty Bank Building, later became the Meridian Bank Tower, and is now the Grand Central Tower. Its 20-by-20-foot signs on the north and south faces carry the current bank logo, a detail visible from the street.

The tower stands at 3550 North Central Avenue; its north and south faces carry 20-by-20-foot signs, useful for orientation from Central Avenue. The 1988 remodel added a terracotta-colored pitched roof and reddish-brown stone columns, so look for the tan-and-brown top rather than the original light blue glass.

At the February 13, 1959 groundbreaking, a 3,000-pound cake modelled on the tower was presented; it stood 10 feet tall, 5 feet wide and 4 feet thick, and developer David H. Murdock cut the first piece with a silver-plated shovel.