I don't find it "too much" though. There is usually a cafe you can hop into, or an airconditioned mall (or 7-11) or if you have just had it and want to sit down somewhere and be cool, you can grab one of the ever-present taxis.
The Erawan museum is one of Bangkok's "second-tier" attractions, the kind of place people often visit after they have ticked off the Grand Palace and Jim Thompson's House and find they have an extra day to fill. Which is weird, because a 15-storey tall three-headed elephant with a psychedelic Buddha shrine inside kind of jumps out at you, or at least it does to me.
Its relatively low profile is undoubtedly due to its location in the suburbs - far from other tourist sights, and a 20-40 minute taxi or bus ride from the last Skytrain station at On Nut.
But when you get there, you get to climb up the drippingly ornate staircase inside the elephant's base, peer out of a window in its belly and then visit the aqua blue-and-orange shrine in the middle head. Surrounding the building itself are beautiful gardens where replicas of mythological creatures in concrete frolic in shady gardens.
The whole complex - paid for by the owner of Thailand's Mercedes Benz dealership license - is a celebration of the cosmology of Thailand's rich, syncretic Buddhist-Hindu mythology, as symbolized by Erawan, the three-headed (or in some versions, thirty three headed) elephant mount of the god Indra.