Hours: Lake and river tours depart daily 10-8:30, Memorial Day weekend-Labor Day; Mon.-Thurs. 10:15-7:15, Fri.-Sun. 10-8:30, day after Labor Day-late Oct.; daily 10:15-5:45, mid-Mar. through day before Memorial Day weekend.; daily 10:15-4:45, late Oct.-late Nov. Architecture tours depart daily 9:30-9, Memorial Day weekend-Labor Day; Mon.-Thurs. 10:45-8, Fri.-Sun. 9:30-8, day after Labor Day-late Oct.; daily 10:45-6:30, late Apr.-day before Memorial Day weekend; daily 11:15-4, mid-Mar. to late Apr. and late Oct.-late Nov. Water taxis operate Mon.-Fri. 6:45 a.m.-9 p.m., Sat.-Sun. 9-9, mid-Mar. to late Nov. (also Sat. 9 p.m.-10:50 p.m., Memorial Day-Labor Day). Phone ahead to confirm schedule.