along the bend. Hugman's plan was initially not well-received – the area was noted for being dangerous. At one point, it was declared off-limits to military personnel. People were warned of the threat of being "drowned like a rat" should the river flood. However, over the next decade support for commercial development of the river bend grew, and crucial funding came in 1939 under the Works Progress Administration (WPA) which resulted in the initial construction of a network of some of walkways, about twenty bridges, and extensive plantings including some of the bald cypress (others are several hundred years old) whose branches stretch up to ten stories and are visible from street level. Hugman's persistence paid off; he was named project architect. His plan would be put to the test in 1946, when another major flood threatened Downtown San Antonio, but the Olmos Dam and bypass channel minimized the area damage. Casa Rio, a landmark River Walk restaurant, became the first restaurant in the area in 1946, opening next door to Hugman's office. Through the following decades the network has been improved and extended. The first major extension of the Riverwalk was constructed by the joint venture of two general contractors Darragh & Lyda Inc. and H. A. Lott Inc. to Tower of the Americas as part of HemisFair '68. The expansion extended the Riverwalk beyond its natural banks at the horseshoe bend to the new convention center and theater by excavating much of the block bordered by Commerce, Bowie, Market and Alamo Streets. That was also the year the Hilton Palacio del Rio was built, the first of many downtown hotels that leverage their slice of urban "riverfront." A subsequent major expansion opened in 1988 that extended a branch from the 1968 extension to create a lagoon at the new Rivercenter Mall and the Marriott Rivercenter Hotel. In 1981 the Hyatt Regency San Antonio opened with a new pedestrian connector that linked Alamo Plaza to the River Walk with concrete waterfalls, waterways and indigenous landscaping. Known as the Paseo del Alamo, this river "extension" actually flows from Alamo Plaza into the San Antonio River through the atrium of the hotel. This connector not only allows the hotel to market itself as being on Alamo Plaza and on the River Walk, but it provides the city with an urban park that connects the city's two largest tourist attractions. Many downtown