When the Spaniards first arrived in Guam in 1668, Tumon was one of the most prominent villages. The first missionary to Guam, Padre (Pålé) Diego San Vitores and Pedro Calungsod were killed in Tumon by Mata'pang, a village chief, after the priest had baptised the chief's daughter without permission. A park and statue mark the site of San Vitores death while a Roman Catholic church named after him (as Bl. Diego San Vitores) is along Tumon's main road, also named in his honor.
A small tunnel through a large rock on the tourist beach overlooking the bay was part of the defensive positions prepared by the Japanese occupiers during World War II. The American forces landed in a different location during the Battle of Guam and the Tumon defenses were not tested.
Today, dozens of hotels in addition to shopping centers, water parks, night clubs, and other attractions can be found along the sandy beaches of Tumon Bay. The Bay was recently made a marine preserve. Tumon is served by Antonio B. Won Pat International Airport in Tamuning.
Because of all the luxury shops and midscale stores in the city, Tumon is often called "the Paris of the Pacific."
The beaches in Tumon are all wildfile preserves. Fishing is allowed in certain areas, but fishermen must stand on the beach to cast their nets or fishing lines. Walking into the water to fish is illegal.
One big Tourist Shopping location is Micronesia Mall, which has expanded and added a food court and a Macy's as the sole anchor store. Another big shopping location is a 24 hour Kmart, which is as big as any standard Kmart on the mainland US. Parking is frequently full and there is parking on the roof. Both Micronesia Mall and Kmart are off Hotel Row, with buses frequently running between the shops and the hotels.
There is currently a debate in the area on the subject of "adult entertainment". Some contend the strip clubs bring in much needed tourist dollars, while others believe they scare away families.
Currently, Tumon Bay, or Hotel Row, is a protected reserve, but it will take many years for the seaweed and fish to come back to their previous levels. The beach along Hotel Row was also covered with rocks, many of which were removed as well.
The beachfront is now home to many Hawaiian-style shows and dotted with shops. Currently, white sand is trucked in weekly to cover the slightly darker, browner sand that naturally occurs along Tumon Bay as waves wash the sands out to sea. Every morning rakings occur at the Hyatt Regency to make the sand look untouched by the masses of the previous day.
The northern part of Tumon Bay is the busiest and the most populous part of the Tumon Bay districts. Most of the hotels in Tumon are located in this area including, Nikko, Okura, Westin, Ohana Bayview, Ohana Oceanview, Tumon Bay Capitol, Outrigger, Hyatt, and Pia Marine. This section is also expecting an economic boom due to the arrival of the US military. Many new tall high-rise buildings are being constructed over the next few years, including infrastructure upgrades and an addition of many new shopping centers.
Many of the new high-rises in the northern Tumon area include, the Bayview 5, The Two Lover Point Towers, an high-rise near the Westin, the Baldyga shopping center, the expansion of Underwater world and more projects expected to go up soon.